Case No. 0044Triple murder · Co. Louth · 28 Sep 2025

Triple murder accused Robert O'Connor trial hears pathologist evidence on parents' deaths

Robert O'Connor, 32, of Drumgowna, Louth Village, Dundalk, Co Louth, is accused of stabbing his mother Louise (56), father Mark (54) and younger brother Evan (27) to death at their home between 6.30pm and 7pm on 28 September 2025, inflicting a combined 139 stab wounds. He was found the following morning in a black hoodie with white headphones, had dried blood on his hands, and told gardaí 'Yes, I killed them'. He has pleaded not guilty of murder by reason of insanity, or guilty of manslaughter on the basis of diminished responsibility, and accepts he caused the deaths. At the Central Criminal Court trial, which began in October 2026, the defence psychiatrist Dr Fiona Toal testified that O'Connor was experiencing a relapse of schizophrenia at the time and meets the criteria for not guilty by reason of insanity, while the prosecution psychiatrist Dr Ronan Mullaney accepts diminished responsibility but does not support the insanity verdict. The trial continues before Justice Mícheál P O'Higgins.

  1. Reportednot reported
  2. Arrestednot reported
  3. Chargednot reported
  4. In court13 Oct
    17 reports
  5. Verdict
  6. Sentenced
reportedhappened, not reportedlatest stagenot yet

Key facts

consolidated from all reports
What happened
Robert O'Connor, 32, is accused of stabbing his mother Louise (56), father Mark (54) and younger brother Evan (27) at their home, inflicting a combined 139 stab wounds.
When
The killings appeared to have taken place between 6.30pm and 7pm on 28 September 2025.
Where
The murders took place at the family home in Drumgowna, Louth Village, Dundalk, Co Louth.
Weapon
The accused used a kitchen knife; three knives were recovered from the scene and wound morphology indicated a single sharp-edged weapon.
Cause
Mark O'Connor died from blood loss and respiratory compromise from 44 stab wounds, Louise was stabbed at least 20 times, and Evan was stabbed at least 70 times with the majority of wounds inflicted while he was still alive.
Investigation
The accused was found the following morning in a black hoodie with white headphones, had dried blood on his hands, and told gardaí 'Yes, I killed them'; his first interview took place at Drogheda Garda Station at 5pm on 29 September 2025.
Charges
Robert O'Connor has pleaded not guilty of murder by reason of insanity, or guilty of manslaughter on the basis of diminished responsibility.
In court
The trial is before Justice Mícheál P O'Higgins at the Central Criminal Court with a jury of six men and six women.
Other details
  • The accused was diagnosed with schizophrenia in 2018, had stopped taking his medication in August 2025, and was using cocaine and mephedrone in the 24 hours before the killings.
  • Defence psychiatrist Dr Fiona Toal testified that O'Connor was experiencing a relapse of schizophrenia and meets the criteria for not guilty by reason of insanity, while prosecution psychiatrist Dr Ronan Mullaney accepts diminished responsibility but does not support the insanity verdict.
  • Evan O'Connor had severe autism and an intellectual disability.
  • The accused told gardaí the killings followed a row over drugs and that his mother had asked him to let Evan go.
230 statements extracted from the articles
  • whatThe accused had episodes of psychosis from a young age and was diagnosed with schizophrenia in 2018. (irishmirror.ie, irishtimes.com)
  • whatThe accused accepts he caused the death of the three victims. (irishmirror.ie, irishtimes.com, rte.ie)
  • whatEvan O'Connor had severe autism and an intellectual disability. (irishmirror.ie)
  • whatThe carer initially mistook a body drenched in blood for a Halloween decoration. (irishmirror.ie)
  • whatEvan O'Connor was found lying on his back with his head on a step facing the patio doors, with no top on but wearing shorts. (irishmirror.ie)
  • whatMark O'Connor's body was found behind the gates with a white shoe on the lawn beside him. (irishmirror.ie)
  • whatRaymond Malone heard Robert shouting the phrase 'I'll end you, I'll f**king end you' on the evening of September 28. (irishmirror.ie)
  • whatRobert told Raymond Malone 'where do I go from here'. (irishmirror.ie)
  • whatNeighbour Sean Kerr told gardaí that Robert seemed to be in 'outer space or on another planet'. (irishmirror.ie)
  • whatRobert told Ruth Callan 'its all mumbled up in my head, I can't explain'. (irishmirror.ie)
  • whatRobert told Ruth Callan 'No, no, they tortured me for years, they don't understand'. (irishmirror.ie)
  • whatRobert told Ruth Callan 'My family, he did, he manipulated me for years'. (irishmirror.ie)
  • whatWhen asked if the sirens were for him, Robert replied 'Yes, I killed them'. (irishmirror.ie)
  • whatThe accused accepted he caused the death of the three victims (irishtimes.com)
  • whatDurrigan saw a body drenched in blood from head to toe behind the gates (irishtimes.com)
  • whatMartina Malone brought the carer into her house and locked the door behind them (irishtimes.com)
  • whatDurrigan had met the accused three weeks before and found him very polite (irishtimes.com)
  • whatThe accused put his bloodied hands behind his back and advanced at gardaí shouting 'shoot me'. (irishmirror.ie)
  • whatThe accused asked a detective 'what kind of time' he was looking at on the way to the garda station. (irishmirror.ie)
  • whatThe accused was found in a black hoodie wearing white headphones in Phillipstown. (irishmirror.ie)
  • whatThe accused was about three metres away and shouted 'Shoot me, shoot me, shoot me' at the detective. (irishmirror.ie)
  • whatThe accused refused to comply with instructions to put his hands up and kneel on the ground a number of times. (irishmirror.ie)
  • whatDried blood was visible on the accused's hands when he put them over his head. (irishmirror.ie, irishtimes.com)
  • whatNo weapon was found on the accused during a search. (irishmirror.ie, irishtimes.com)
  • whatThe accused told officers he killed his father, mother and brother, slashing his mother in the face. (irishmirror.ie)
  • whatGarda Shane O'Malley observed the accused's hands were covered in blood and he kept trying to put them into his pockets or behind his back. (irishmirror.ie)
  • whatThe accused told Det Sgt Gill he was sorry for killing his mother but not sorry for killing his father and brother. (irishmirror.ie)
  • whatThe accused said his mother got in the way and he stabbed her in the forehead in the sitting room. (irishmirror.ie)
  • whatThe accused said he went back for his brother and stabbed him like a blood bag. (irishmirror.ie)
  • whatThe accused said he had been using cocaine lately and bought 'Wildcat', which was actually salt. (irishmirror.ie)
  • whatThe accused was wearing a black hoodie and white headphones when encountered by gardaí (irishtimes.com)
  • whatThe accused was described as aggressive and angry (irishtimes.com)
  • whatRobert openly said he had taken cocaine (irishtimes.com)
  • whatCurtis provided a phone number for Turas, a service in Dundalk for drug use and mental health (irishtimes.com)
  • whatRobert had a knife on him when standing in the sitting room (irishtimes.com)
  • whatRobert could be involuntarily sectioned under the Mental Health Act (irishtimes.com)
  • whatThe accused accepts he caused the death of the three victims who sustained a combined 139 stab wounds (irishtimes.com, irishmirror.ie)
  • whatMark O'Connor died after suffering 44 stab wounds (rte.ie)
  • whatLouise O'Connor was stabbed at least 20 times (rte.ie, irishtimes.com)
  • whatThe attack on Mark was described as sustained and violent (rte.ie)
  • whatThe deepest stab wound track on Mark was 20cm and penetrated into the scapula (rte.ie)
  • whatThere was no evidence of defence-type incised wounds on Mark's arms or forearms (rte.ie, irishmirror.ie)
  • whatMark sustained 44 stab wounds and seven incised wounds (rte.ie)
  • whatLouise had ten stab wounds to her head, neck, chest and abdomen (rte.ie)
  • whatLouise had two stab wounds to the left arm and eight to the back and back of the neck (rte.ie)
  • whatMark O'Connor died after suffering 44 stab wounds in a sustained and violent attack. (irishmirror.ie)
  • whatThere were no obvious defence injuries on the bodies of Mark and Louise O'Connor. (irishmirror.ie)
  • whatRobert O'Connor has pleaded not guilty of murder by reason of insanity, or guilty of manslaughter on the basis of diminished responsibility. (irishmirror.ie)
  • whatMark had 44 stab wounds, the majority over the back, head and neck. (irishmirror.ie)
  • whatMark's right eye was disrupted by a stab wound that damaged the cavity but not the eyeball itself. (irishmirror.ie)
  • whatOne stab wound went through the shoulder blade into the left chest cavity to a depth of 20cm without damaging the left lung. (irishmirror.ie)
  • whatMark's brain was swollen due to shock and blood loss. (irishmirror.ie)
  • whatBlood loss compromised Mark's respiration due to air in the chest cavities. (irishmirror.ie)
  • whatDamage to the backbone and a penetrating injury through the shoulder blade required severe force. (irishmirror.ie)
  • whatThe deepest track from a stab wound on Mark was 20cm and had penetrated into the scapula. (irishmirror.ie)
  • whatMark had 44 stab wounds and seven incised wounds suggesting a sustained and violent attack. (irishmirror.ie)
  • whatLouise had been stabbed at least 20 times, including wounds to the head, front and back of the trunk, and upper left arm. (irishmirror.ie)
  • whatOne stab wound went through Mark's shoulder blade and entered his left chest cavity to a depth of 20cm without damaging the left lung (irishtimes.com)
  • whatLouise was stabbed at least 20 times including to the head, front and back of the trunk, and the upper left arm (irishtimes.com)
  • whatEvan O'Connor had been diagnosed with autism (irishmirror.ie)
  • whatEvan was prescribed antipsychotic medication and antidepressants (irishmirror.ie)
  • whatEvan weighed 90 kilograms (irishmirror.ie)
  • whatEvan had 25 stab wounds to the head and neck area (irishmirror.ie)
  • whatEvan had five stab wounds to the front of the body (irishmirror.ie)
  • whatOne stab wound to the left of the chest entered the cavity between the ribs with a depth of 13cm but did not reach the heart (irishmirror.ie)
  • whatEvan had 10 stab wounds to the right arm consistent with defence injuries (irishmirror.ie)
  • whatEvan had 19 stab wounds to the left arm, many consistent with protecting himself or trying to grab the knife (irishmirror.ie)
  • whatOne stab wound to the head in line with the left ear penetrated the skull bone but did not damage the brain (irishmirror.ie)
  • whatThe pathologist found 26 slash or incised wounds on Evan's body (irishmirror.ie)
  • whatBoth of Evan's lungs had collapsed (irishmirror.ie)
  • whatThe sack around the heart had defects from two stab wounds but the heart itself was uninjured (irishmirror.ie)
  • whatEvan had approximately 75 stab wounds and was stabbed at least 70 times (irishmirror.ie)
  • whatThe vast majority of injuries were sharp force injuries suggesting Evan was still alive when sustained (irishmirror.ie)
  • whatNo major blood vessels had been damaged in the chest (irishmirror.ie)
  • whatThe majority of stab wounds were between 2cm and 4cm, with the deepest at 15cm (irishmirror.ie)
  • whatThe cause of death was blood loss and probable bilateral pneumothoraces leading to hypovolemic shock and lung collapse (irishmirror.ie)
  • whatThe postmortem examination on Evan O'Connor was conducted on September 30, 2025 (irishmirror.ie)
  • whatRobert O'Connor is 32 years old (rte.ie)
  • whatVictim Louise O'Connor was 56 (rte.ie)
  • whatVictim Mark O'Connor was 54 (rte.ie)
  • whatVictim Evan O'Connor was 27 (rte.ie)
  • whatHis solicitor told gardaí he has schizophrenia (rte.ie)
  • whatHe could not remember the last time he took his medication (rte.ie)
  • whatHe had gone upstairs to use cocaine before the confrontation (rte.ie)
  • whatHis parents called him downstairs to discuss his cocaine use (rte.ie, irishtimes.com)
  • whatHe got a knife and walked into the sitting room (rte.ie)
  • whatHe slashed his mother on the head first (rte.ie)
  • whatHis mother told him she had to go to the toilet (rte.ie)
  • whatHis mother and father both asked him to let Evan go (rte.ie)
  • whatHe was pointing a knife at the three family members (rte.ie)
  • whatHis father charged at him trying to get out the door (rte.ie)
  • whatRobert O'Connor is a 32-year-old man accused of murdering three family members (irishtimes.com)
  • whatThe victims were his mother Louise, aged 56, his father Mark, aged 54, and his younger brother Evan, aged 27 (irishtimes.com)
  • whatThe accused accepts he caused the deaths of the three victims (irishtimes.com)
  • whatO'Connor went upstairs again, took cocaine and watched pornography (irishtimes.com)
  • whatO'Connor got a knife and walked into the sitting room (irishtimes.com)
  • whatO'Connor was pointing a knife at the three family members (irishtimes.com)
  • whatO'Connor's mother asked him to let his brother Evan go (irishtimes.com)
  • whatO'Connor told detectives he dragged his parents and brother into the garden after stabbing them (irishmirror.ie)
  • whatO'Connor said he only realised he had done something terrible hours later (irishmirror.ie)
  • whatThe jury heard evidence that O'Connor stabbed his special needs brother Evan at least 70 times (irishmirror.ie)
  • whatThe majority of wounds to Evan were inflicted while he was still alive (irishmirror.ie)
  • whatO'Connor said he was running laps of the garden and doing pull-ups on the night of the killings (irishmirror.ie)
  • whatO'Connor said he definitely took all three victims outside (irishmirror.ie)
  • whatO'Connor said he was going to throw one victim to heaven and one to hell and had to open the gate for their souls (irishmirror.ie)
  • whatO'Connor said he did not call 999 (irishmirror.ie)
  • whatO'Connor said he attacked his mother first and then his father charged towards him (irishmirror.ie)
  • whatO'Connor said he slashed his mother on the head (irishmirror.ie)
  • whatO'Connor said he told everyone to shut up and made them stand in a triangle (irishmirror.ie)
  • whatO'Connor said he tried to get the iPad from Evan and it clicked in his head that it was programming reality (irishmirror.ie)
  • whatO'Connor said he consumed methodrone early on the Monday morning after the killings (irishmirror.ie)
  • whatO'Connor said he consumed one dose of methodrone under his tongue and was surprised he was not dead (irishmirror.ie)
  • whatA neighbour named Mr Malone said in his statement that he heard shouting from the O'Connor house (irishmirror.ie)
  • whatO'Connor said when he brought Evan to where his mother was, they were holding hands (irishmirror.ie)
  • whatO'Connor said he got naked at one point and clarified he was not sexually aroused (irishmirror.ie)
  • whatDr Fiona Toal, a consultant forensic psychiatrist called by the defence, said the accused was experiencing a relapse of schizophrenia when he fatally stabbed the three family members. (irishmirror.ie)
  • whatDr Toal found the accused meets the criteria for a special verdict of not guilty by reason of insanity under the Criminal Law Insanity Act 2006. (irishmirror.ie)
  • whatBoth the defence and prosecution psychiatrists agree that diminished responsibility is made out for the three deaths. (irishmirror.ie, irishtimes.com)
  • whatBoth psychiatrists agree the accused suffered a relapse of schizophrenia in September 2025, having been diagnosed with the disorder in 2018. (irishmirror.ie)
  • whatThe accused had very clear psychiatric symptoms and bizarre beliefs regarding his parents, thinking they were imposters who controlled his thoughts. (irishmirror.ie)
  • whatThe accused told Dr Toal he thought his brother Evan was controlling him on an iPad on the night of the fatal attack and referred to him as 'the ultimate controller'. (irishmirror.ie)
  • whatThe accused started smoking cannabis at 13 years old, which later progressed to cocaine, causing significant arguments at home. (irishmirror.ie)
  • whatThe accused spent time in a drug rehabilitation facility at 17 years old. (irishmirror.ie)
  • whatThe accused went to his GP at 16 years old with symptoms of depression and a background of polysubstance abuse and was prescribed an antidepressant in 2011. (irishmirror.ie)
  • whatThe accused was assessed by a psychiatrist at 19 years old, where his symptoms were attributed to drug psychosis and social anxiety. (irishmirror.ie)
  • whatIn March 2014, the accused was considered appropriate for detention by mental health services after he threatened to kill his parents. (irishmirror.ie)
  • whatThe accused applied to be admitted as an involuntary patient but had taken LSD the week before, creating an impression of drug-induced psychosis. (irishmirror.ie)
  • whatA discharge note by a social worker communicating with Mark O'Connor documented 'very, very significant family concerns'. (irishmirror.ie)
  • whatMark O'Connor reported his son had been depressed for two years and was hearing voices for the previous 18 months. (irishmirror.ie)
  • whatIn 2018, Louise O'Connor contacted the GP about Robert getting very aggressive when he saw a man in a shirt and wanting to kill him. (irishmirror.ie)
  • whatRobert reported violent thoughts and believed that birds flying around him were mocking him. (irishmirror.ie)
  • whatGiven the absence of drug use for at least a year, Robert was formally diagnosed with schizophrenia at the end of 2018 when he was 24 years old. (irishmirror.ie)
  • whatWhile not taking illicit drugs between 2018 and 2024, the accused had relapses throughout this time. (irishmirror.ie)
  • whereKim Curtis owns a pharmacy in Louth Village (irishtimes.com)
  • whereThe killings occurred at the family home in Co Louth (rte.ie)
  • whereThe accused lives in Drumgowna, Louth Village, Dundalk, Co Louth (rte.ie)
  • whereMark's body was found near the entrance gate to the house (rte.ie, irishmirror.ie)
  • whereEvan was found wearing only shorts near the patio doors (rte.ie)
  • whereLouise was found fully clothed in the kitchen (rte.ie, irishmirror.ie, irishtimes.com)
  • whereEvan was found wearing only shorts near the patio doors of the house. (irishmirror.ie)
  • whereEvan's body, found wearing only shorts, was near the patio doors (irishtimes.com)
  • whereThe murders took place in the family home in Co Louth (rte.ie)
  • whereRobert O'Connor lives in Drumgowna, Louth Village, Dundalk, Co Louth (rte.ie)
  • whenCarer Loreto Durrigan arrived at Drumgowna at 9.32am on September 28. (irishmirror.ie)
  • whenThe carer was on the phone to gardaí at 9.38am. (irishmirror.ie)
  • whenNeighbour Martina Malone heard a roar or a shout from the O'Connor house on the evening of September 28. (irishmirror.ie)
  • whenRobert was at his gate around 8.15am the next morning and apologised for the noise. (irishmirror.ie)
  • whenRuth Callan heard sirens at 9.45am on September 29. (irishmirror.ie)
  • whenLoreto Durrigan arrived at Drumgowna at 9.32am on September 28th (irishtimes.com)
  • whenDurrigan was on the phone to gardaí at 9.38am (irishtimes.com)
  • whenDetective Garda Gerard Nixon was informed at 9.40am on September 29 that two bloodied bodies had been found in the garden of Drumgowna. (irishmirror.ie)
  • whenDet Garda Gerard Nixon was informed at 9.40am on September 29th that two bloodied bodies had been found in the garden of Drumgowna (irishtimes.com)
  • whenOn 1 September 2025, Mrs O'Connor came to the pharmacy with Robert carrying a shoe box of his medication (irishmirror.ie)
  • whenThe incident occurred between 28 and 29 September 2025 (rte.ie)
  • whenThe postmortem examination on Mark and Louise O'Connor was conducted on 1 October 2025. (irishmirror.ie)
  • whenThe killings occurred between 28 and 29 September 2025 (rte.ie)
  • whenHis first interview took place at Drogheda Garda Station at 5pm on 29 September 2025 (rte.ie)
  • whenThe killings took place at the family home between September 28 and 29, 2025 (irishtimes.com)
  • whenThe accused's first interview took place at Drogheda Garda Station at 5pm on 29 September 2025. (irishmirror.ie)
  • whenThe killings appeared to have taken place in or around 6.30pm to 7pm on 28 September 2025 (irishmirror.ie)
  • causeThe accused said there was a row over drugs and he only meant to kill his father and brother. (irishmirror.ie)
  • causeThe accused said they had an argument at the kitchen table over his brother who cannot talk properly. (irishmirror.ie)
  • causeThe accused said there was a row over drugs and that he only meant to kill his father and brother (irishtimes.com)
  • causeMark's death was from blood loss and respiratory compromise from multiple stab wounds (rte.ie)
  • causeMark's death occurred from blood loss and respiratory compromise arising from multiple stab wounds with no contributory factors. (irishmirror.ie, irishtimes.com)
  • causeO'Connor was experiencing a relapse of schizophrenia when he fatally stabbed the three family members (irishtimes.com)
  • weaponThe accused stabbed his parents with the kitchen knife from a block of five knives on the kitchen counter. (irishmirror.ie)
  • weaponThree knives were recovered from the scene (rte.ie, irishmirror.ie, irishtimes.com)
  • weaponMany injuries showed one squared and one blunted end, indicating the knife used was a single, sharp-edged weapon (irishtimes.com)
  • weaponThe accused got a kitchen knife from between the oven and the sink. (irishmirror.ie)
  • weaponThe accused was pointing a knife at the three family members and told them not to open their mouths at the same time. (irishmirror.ie)
  • investigationForensic scientist Andrea McGrath examined a three-seater couch in the sittingroom which had a considerable amount of blood-staining. (irishtimes.com)
  • investigationMark O'Connor was actively bleeding in those areas while he was in an upright position. (irishtimes.com)
  • investigationThe post-mortem on Mark and Louise was conducted on 1 October 2025 (rte.ie)
  • chargeRobert O'Connor pleaded not guilty of murder by reason of insanity, or guilty of manslaughter on the basis of diminished responsibility. (irishmirror.ie, irishtimes.com)
  • chargeO'Connor pleaded not guilty of murder by reason of insanity or guilty of manslaughter on diminished responsibility (irishtimes.com)
  • chargeO'Connor pleaded not guilty of murder by reason of insanity, or guilty of manslaughter on the basis of diminished responsibility (irishtimes.com, rte.ie, irishmirror.ie)
  • chargeRobert O'Connor pleaded not guilty of murder by reason of insanity (rte.ie)
  • chargeRobert O'Connor pleaded guilty of manslaughter on the basis of diminished responsibility (rte.ie)
  • chargeO'Connor meets the criteria for a special verdict of not guilty by reason of insanity under the Criminal Law (Insanity) Act 2006 (irishtimes.com)
  • courtTwo expert psychiatrists will give evidence: Dr Fiona Toal for the defence and Dr Ronan Mullaney for the prosecution. (irishtimes.com)
  • courtThe trial continues on Thursday. (irishtimes.com)
  • courtThe jury consists of six men and six women (irishtimes.com)
  • otherThe three victims sustained a combined 139 stab wounds. (irishtimes.com, irishmirror.ie)
  • otherThe accused told gardaí he had a row over drugs, lost his head and only meant to kill his father and brother, but not his mother. (irishtimes.com)
  • otherDr Mullaney accepts the accused was in a state of psychosis and was having a psychosis relapse of schizophrenia. (irishtimes.com)
  • otherDr Mullaney does not support the special verdict of not guilty by reason of insanity from a psychiatric point of view. (irishtimes.com)
  • otherDr Mullaney will give evidence that on the balance of probabilities the accused was suffering from schizophrenia at the material time and his mental disorder substantially diminished his responsibility for each of the three killings. (irishtimes.com)
  • otherRobert O'Connor was not maintaining his schizophrenia medication in the months before the murders (irishmirror.ie)
  • otherKim Curtis is the owner of a pharmacy in Louth village (irishmirror.ie)
  • otherSince 2022, the pharmacist had dispensed Aripiprazole, an antipsychotic medication, to Mrs O'Connor for Robert O'Connor (irishmirror.ie)
  • otherThe accused was also prescribed Phenergan, a sedative antihistamine for sleep, from March 2025 (irishmirror.ie)
  • otherMrs O'Connor would also collect anxiety medication for her youngest son Evan, who was autistic (irishmirror.ie)
  • otherThe shoe box contained between four and five months worth of medication that had not been consumed (irishmirror.ie)
  • otherMrs O'Connor said the medication was found in Robert's wardrobe (irishmirror.ie)
  • otherRobert openly said he was taking cocaine when asked by the pharmacist (irishmirror.ie)
  • otherThe pharmacist described Robert as having no posture, very emotionless, sitting slouched with glazed eyes (irishmirror.ie)
  • otherThe pharmacist provided a phone number for Turas, a service in Dundalk for drug use and mental health (irishmirror.ie)
  • otherTwo weeks later, Mrs O'Connor told the pharmacist she had not contacted Turus (irishmirror.ie)
  • otherRobert came down to the sitting room and told his mother a lady had called or commissioned him to come downstairs (irishmirror.ie)
  • otherRobert had a knife on him when standing in the sitting room on that occasion (irishmirror.ie)
  • otherMrs O'Connor said she had not contacted gardaí about the incident (irishmirror.ie)
  • otherOne of the family found the accused frothing at the mouth in his bedroom, having a seizure (irishmirror.ie)
  • otherRobert said he was going to kill her (irishmirror.ie)
  • otherThe pharmacist made Mrs O'Connor aware Robert could be involuntarily sectioned under the mental health act (irishmirror.ie)
  • otherMrs O'Connor was reluctant and not prepared to have Robert sectioned (irishmirror.ie)
  • otherForensic scientist Robert Kennedy testified that mephedrone was found on the accused when searched at Drogheda Garda Station on 29 September (irishmirror.ie)
  • otherThe accused's solicitor told officers his client has schizophrenia and could not remember the last time he took his medication. (irishmirror.ie)
  • otherThe accused said he had gone upstairs to do some cocaine before his parents called him back down. (irishmirror.ie)
  • otherThe accused said his parents told him they were not comfortable with the cocaine use happening in the house. (irishmirror.ie)
  • otherThe accused said he slashed his mother first on the head. (irishmirror.ie)
  • otherThe accused's mother said 'Rob I have to go to the toilet' before the stabbing. (irishmirror.ie)
  • otherThe accused said his mother and father both asked him to let Evan go. (irishmirror.ie)
  • otherThe accused said his father charged at him to try to get out the door and he thought he stuck the knife in his stomach. (irishmirror.ie)
  • otherThe accused said he stabbed them multiple times but could not remember the details. (irishmirror.ie)
  • otherThe accused said he had taken cocaine a lot regularly in the last three or four years but had never been violent. (irishmirror.ie)
  • otherThe accused said the stabbing took anywhere from 15 minutes onwards. (irishmirror.ie)
  • otherThe accused said he never found where he put the knife and did not take it out of the house. (irishmirror.ie)
  • otherThe accused added that his mother asked him to let Evan go. (irishmirror.ie)
  • otherFriend Sander Kopanov had known Robert since secondary school and they went out together in Carrickmacross as teenagers. (irishmirror.ie)
  • otherThe accused started working at KTF in Dundalk in 2024. (irishmirror.ie)
  • otherThe accused told his friend that if he didn't take his medication his head would go and he would hear voices. (irishmirror.ie)
  • otherO'Connor was considered appropriate for detention by mental health services in 2014 after threatening to kill his parents (irishtimes.com)
  • otherO'Connor had bizarre beliefs that his parents were impostors who controlled his thoughts (irishtimes.com)
  • otherO'Connor thought his brother Evan was controlling him on an iPad on the night of the fatal attack (irishtimes.com)
  • otherO'Connor started smoking cannabis at 13 years old and later progressed to cocaine (irishtimes.com)
  • otherO'Connor spent time in a drug rehabilitation facility at 17 years old (irishtimes.com)
  • otherIn March 2014 O'Connor applied for involuntary admission but had taken LSD the week before, creating an impression of drug-induced psychosis (irishtimes.com)
  • otherO'Connor stopped taking his medication in August 2025 and in the 24 hours before the killing took cocaine mixed with mephedrone (irishtimes.com)
  • otherO'Connor is on a waiting list for the Central Mental Hospital (irishtimes.com)

The reporting

newest first
  1. 23 Oct2026
    Father of murder accused reported ‘serious concerns’ for family’s safety to social worker

    Defence psychiatrist Dr Fiona Toal testifies that O'Connor was in a relapse of schizophrenia, met criteria for not guilty by reason of insanity, and that his father had warned a social worker a decade earlier about family safety concerns. Both psychiatrists agree diminished responsibility is made out. Trial continues before Judge Mícheál P O'Higgins.

    accused, male, irish (judged from name)victim, 54, male, irish (judged from name)victim, 56, female, irish (judged from name)victim, 27, male, irish (judged from name)
  2. 23 Oct2026
    Father of triple murder accused expressed "serious concerns" for family's safety

    Defence psychiatrist Dr Fiona Toal gave evidence that O'Connor was experiencing a relapse of schizophrenia at the time of the offence and meets criteria for not guilty by reason of insanity; both psychiatrists agree diminished responsibility is made out; father had reported serious safety concerns to a social worker in 2014; O'Connor stopped medication in August 2025 and took cocaine mixed with mephedrone in the 24 hours before the offence.

    victim, Mark O'Connor, 54, male, irish (judged from name)Mark O'Connorvictim, Louise O'Connor, 56, female, irish (judged from name)Louise O'Connorvictim, Evan O'Connor, 27, male, irish (judged from name)Evan O'Connoraccused, Robert O'Connor, male, named, irish (judged from name)Robert O'Connor
  3. 23 Oct2026
    Jury hears of triple murder accused's garda interviews

    Jury heard the second and third garda interviews in which O'Connor described dragging his victims to the garden, his delusional beliefs about saving souls and 'programming reality', his statement that he only realised what he had done hours later, and his consumption of methodrone the following morning. Cross-examination established the killings appeared to have occurred around 6.30pm to 7pm on 28 September 2025.

    accused, Robert O'Connor, 32, male, named, irish (judged from name)Robert O'Connorvictim, Mark O'Connor, 54, male, irish (judged from name)Mark O'Connorvictim, Louise O'Connor, 56, female, irish (judged from name)Louise O'Connorvictim, 27, male, irish (judged from name)
  4. 22 Oct2026
    Murder accused told gardai how mother asked him to let special needs brother go

    Reports the jury hearing the accused's first interview with gardaí, in which he described the sequence of events including his cocaine use, the stabbing, his mother's request to let Evan go, and his belief that his brother's iPad 'changed the reality'. Also includes testimony from friend Sander Kopanov about the accused's personality, medication issues, and employment at KTF in Dundalk.

    victim, 54, male, irish (judged from name)victim, Louise O'Connor, 56, female, irish (judged from name)Louise O'Connorvictim, 27, male, irish (judged from name)accused, Robert O'Connor, 32, male, named, irish (judged from name)Robert O'Connor
  5. 21 Oct2026
    ‘My mother asked me to let Evan go’: Murder accused was asked to spare brother with special needs

    Jury heard O'Connor's first interview account describing the sequence of events, his cocaine use, the stabbing of each victim, and his mother's plea to spare Evan. His solicitor told officers he has schizophrenia and could not remember the last time he took his medication.

    victim, Louise, 56, female, irish (judged from name)Louisevictim, Mark, 54, male, irish (judged from name)Markvictim, Evan, 27, male, irish (judged from name)Evanaccused, 32, male, irish (judged from name)
  6. 21 Oct2026
    Mother told murder accused to let brother go, court told

    Jury heard the accused's first interview at Drogheda Garda Station in which he described the events leading to and during the killings, including his mother asking him to let Evan go, and his friend Sander Kopanov's statement about O'Connor's schizophrenia and medication.

    accused, Robert O'Connor, 32, male, named, irish (judged from name)Robert O'Connorvictim, Louise O'Connor, 56, female, irish (judged from name)Louise O'Connorvictim, 54, male, irish (judged from name)victim, 27, male, irish (judged from name)
  7. 21 Oct2026
    Triple murder accused Robert O'Connor stabbed disabled brother at least 70 times

    Chief State Pathologist Professor Linda Mulligan's detailed testimony on Evan O'Connor's injuries, including wound counts, defence-type injuries, and cause of death, heard at the Central Criminal Court trial.

    accused, Robert O'Connor, 32, male, named, irish (judged from name)Robert O'Connorvictim, Louise O'Connor, 56, female, irish (judged from name)Louise O'Connorvictim, 54, male, irish (judged from name)victim, Evan O'Connor, 27, male, irish (judged from name)Evan O'Connor
  8. 20 Oct2026
    Father of triple murder accused Robert O’Connor died after 44 stab wounds in ‘sustained’ attack

    Chief State Pathologist Linda Mulligan's detailed testimony on the postmortems of Mark and Louise O'Connor, including the number and location of wounds, positions of bodies at the scene, three knives recovered, cause of death, and the single-weapon finding. The accused's plea of not guilty by reason of insanity or guilty of manslaughter on diminished responsibility is confirmed, and the jury is told he accepts he caused the deaths.

    suspect, 32, male, irish (judged from name)victim, 54, male, irish (judged from name)victim, 56, female, irish (judged from name)victim, 27, male, irish (judged from name)
  9. 20 Oct2026
    Dad of triple-murder accused Robert O'Connor died after suffering 44 stab wounds

    Pathologist Linda Mulligan's detailed postmortem evidence on Mark and Louise O'Connor, including wound counts, depth, force used, and absence of defence injuries; three knives recovered; single sharp-edged weapon indicated by wound morphology.

    victim, Mark O'Connor, 54, male, irish (judged from name)Mark O'Connorvictim, Louise O'Connor, 56, female, irish (judged from name)Louise O'Connorvictim, Evan O'Connor, 27, male, irish (judged from name)Evan O'Connoraccused, Robert O'Connor, 32, male, named, irish (judged from name)Robert O'Connor
  10. 20 Oct2026
    Father stabbed 44 times, mother stabbed 20 times - court

    Chief State Pathologist Linda Mulligan gave evidence on post-mortem findings for Mark and Louise O'Connor, detailing 44 and at least 20 stab wounds respectively, the nature of the attack, and the weapons used. The trial continues the following day for Evan O'Connor's post-mortem.

    accused, Robert O'Connor, 32, male, named, irish (judged from name)Robert O'Connorvictim, Mark O'Connor, 54, male, irish (judged from name)Mark O'Connorvictim, Louise O'Connor, 56, female, irish (judged from name)Louise O'Connorvictim, Evan O'Connor, 27, male, irish (judged from name)Evan O'Connor
  11. 20 Oct2026
    Triple murder accused was off schizophrenia medication and using cocaine, pharmacist says

    Pharmacist Kim Curtis gave evidence that Robert O'Connor was not taking his Aripiprazole medication and was using cocaine; his mother Louise O'Connor reported incidents of hallucinations, a knife in the sitting room, and a threat to kill, but did not contact gardaí or Turas.

    accused, 32, male, irish (judged from name)victim, 56, female, irish (judged from name)victim, 54, male, irish (judged from name)victim, 27, male, irish (judged from name)
  12. 19 Oct2026
    Man wasn't taking meds and used cocaine before fatally stabbing family members

    Pharmacist testimony that Robert O'Connor was not taking his Aripiprazole medication and was using cocaine in the months before the murders, along with forensic evidence of mephedrone found on the accused and cocaine in his bedroom. The accused has pleaded not guilty of murder by reason of insanity or guilty of manslaughter on the basis of diminished responsibility.

    victim, Louise O'Connor, 56, female, irish (judged from name)Louise O'Connorvictim, Mark O'Connor, 54, male, irish (judged from name)Mark O'Connorvictim, Evan O'Connor, 27, male, irish (judged from name)Evan O'Connoraccused, Robert O'Connor, 32, male, named, irish (judged from name)Robert O'Connor
  13. 16 Oct2026
    Man advanced towards gardaí and said ‘shoot me, shoot me, shoot me’, trial hears

    Det Garda Gerard Nixon gave evidence about the arrest and O'Connor's statements, including his 'shoot me' outburst, his account of the killings, and his claim that a row over drugs was the cause. The trial also heard that O'Connor was diagnosed with schizophrenia in 2018 and the victims sustained a combined 139 stab wounds.

    victim, 56, female, irish (judged from name)victim, 54, male, irish (judged from name)victim, 27, male, irish (judged from name)accused, 32, male, irish (judged from name)
  14. 16 Oct2026
    Triple murder accused covered in blood shouted 'shoot me' at gardaí, court hears

    Trial testimony from Detective Garda Gerard Nixon, Garda Shane O'Malley, and Detective Sergeant Paul Gill describing the encounter with the accused in Phillipstown, his statements about the killings, his mental state, and the car journey to Drogheda Garda Station. The accused was found in a black hoodie with white headphones, had dried blood on his hands but no weapon, and expressed remorse for killing his mother but not his father and brother.

    victim, Louise O'Connor, 56, female, irish (judged from name)Louise O'Connorvictim, Mark O'Connor, 54, male, irish (judged from name)Mark O'Connorvictim, Evan O'Connor, 27, male, irish (judged from name)Evan O'Connoraccused, Robert O'Connor, 32, male, named, irish (judged from name)Robert O'Connor
  15. 15 Oct2026
    Witness mistook body for Halloween decoration, Louth family murder trial hears

    Witness testimony from special-needs support worker Loreto Durrigan and neighbour Martina Malone; O'Connor pleaded not guilty by reason of insanity or guilty of manslaughter on diminished responsibility; victims sustained 139 combined stab wounds; O'Connor diagnosed with schizophrenia in 2018; trial before Justice Mícheál P O'Higgins.

    accused, 32, male, irish (judged from name)victim, 56, female, irish (judged from name)victim, 54, male, irish (judged from name)victim, 27, male, irish (judged from name)
  16. 15 Oct2026
    Triple-murder trial told of moment carer mistook body for Halloween decoration

    Trial evidence from carer Loreto Durrigan and neighbours Martina Malone, Raymond Malone, Gerry Mallon, Sean Kerr, and Ruth Callan describing the morning of 29 September 2025, including O'Connor's statement 'Yes, I killed them', his diagnosis of schizophrenia in 2018, and his plea of not guilty by reason of insanity or guilty of manslaughter on diminished responsibility.

    victim, Louise O'Connor, 56, female, irish (judged from name)Louise O'Connorvictim, Mark O'Connor, 54, male, irish (judged from name)Mark O'Connorvictim, Evan O'Connor, 27, male, irish (judged from name)Evan O'Connoraccused, Robert O'Connor, 32, male, named, irish (judged from name)Robert O'Connor
  17. 13 Oct2026
    Psychiatric state of man accused of murdering three members of his family ‘central’ to trial

    Prosecution opening address details the psychiatric evidence from two expert psychiatrists, forensic evidence from two scientists, the accused's statement to gardaí, and the two potential verdicts under the Criminal Law Insanity Act 2006.

    accused, 32, male, irish (judged from name)victim, 56, female, irish (judged from name)victim, 54, male, irish (judged from name)victim, 27, male, irish (judged from name)