Ireland Case No. 13154Assault causing harm, producing a bladed weapon · Co. Limerick · 13 Dec 2019
Man found not guilty by reason of insanity over throat-slashing at Bruree addiction centre
Sean Beumer, 29, admitted slashing Aaron Babbington's throat with a makeshift razor-blade knife at Cuan Mhuire addiction treatment centre in Bruree, Co Limerick, in December 2019. A jury at Limerick Circuit Court found him not guilty of assault causing harm and producing a bladed weapon by reason of insanity.
- Reportednot reported
- Arrestednot reported
- Chargednot reported
- In court7 Jul
4 reports - Acquitted11 Jul
2 reports - Sentenced
reportedhappened, not reportedlatest stagenot yet
Key facts
consolidated from all reports64 statements extracted from the articles
- whatA man pleaded not guilty by reason of insanity to charges of assault and producing an improvised bladed weapon. (limerickpost.ie)
- whatThe victim had three lacerations to his neck, one seven inches long, and a laceration to his hand. (limerickleader.ie)
- whatIt is accepted by all parties that Sean Buemer slashed Aaron Babbington's throat. (limerickpost.ie)
- whatBeumer admitted slashing the victim's throat with a makeshift knife made from a razor blade fixed to a plastic handle. (limerickpost.ie)
- whatSean Beumer admitted slashing Aaron Babbington's throat with a makeshift knife. (limerickleader.ie)
- whereThe offences are alleged to have occurred at Cuan Mhuire addiction treatment centre in Bruree, County Limerick. (limerickpost.ie)
- whereThe attack occurred at the smoking area of the treatment centre. (limerickpost.ie)
- whereBeumer was residing at Cuan Mhuire addiction treatment centre in Bruree, County Limerick, where he and the victim were in an alcohol detox programme. (limerickpost.ie)
- whereThe incident happened at Cuan Mhuire in Bruree. (limerickleader.ie)
- whereThe two men were in a residential alcohol detox programme at Cuan Mhuire addiction treatment centre in Bruree, County Limerick. (limerickpost.ie)
- whereThe attack happened at Cuan Mhuire addiction treatment centre in Bruree, County Limerick, in the centre's smoking area. (limerickpost.ie)
- whereThe incident took place in a smoking area of Cuan Mhuire addiction treatment centre in Bruree. (limerickleader.ie)
- whenThe offences are alleged to have occurred on 13 December 2019. (limerickpost.ie)
- whenThe attack occurred at around 1.30am on 13 December 2019. (limerickpost.ie)
- whenThe attack occurred in the smoking area at around 1.30am on 13 December 2019. (limerickleader.ie)
- whenThe attack happened in the early hours of 13 December 2019. (limerickpost.ie, limerickleader.ie)
- causeBeumer told Gardaí that thoughts in his head convinced him his family would be murdered. (limerickpost.ie)
- causeBeumer's previously prescribed medications were discontinued in line with normal detox protocols at the centre. (limerickpost.ie)
- causeBeumer told gardaí he attacked the victim because of thoughts and images in his head. (limerickleader.ie)
- causeThe court heard his prescribed medications had been discontinued under normal detox protocols. (limerickleader.ie)
- causeThe accused did not have access to anti-psychotic medication when the attack happened. (limerickpost.ie)
- causeA psychiatrist told the jury that Beumer was in a psychotic episode during the attack because he had not received anti-psychotic medication for paranoid schizophrenia. (limerickpost.ie)
- causeA consultant psychiatrist said Beumer was in a psychotic episode caused by not receiving anti-psychotic medication. (limerickleader.ie)
- weaponThe attacker used an improvised blade. (limerickpost.ie)
- weaponA staff member handed the weapon used in the attack to Gardaí after it was found. (limerickpost.ie)
- weaponThe weapon was made by fixing unguarded razors to the plastic handle of a disposable razor. (limerickleader.ie)
- weaponThe weapon was a makeshift knife made by attaching a razor blade to a plastic handle. (limerickpost.ie)
- weaponThe makeshift knife was a razor blade fixed to a plastic handle. (limerickleader.ie)
- investigationBlood samples from the hoody worn by Beumer were found to match the victim's DNA. (limerickpost.ie)
- investigationBeumer told Gardaí he put his bloodied hoody top in a bin after the attack. (limerickpost.ie)
- investigationCCTV shown in court showed Beumer following the victim out of the room towards the smoking area. (limerickleader.ie)
- investigationBeumer told gardaí he was relieved when he carried out the attack. (limerickleader.ie)
- investigationAfter his arrest, Beumer told gardaí that psychotic thoughts and voices had been building in his mind before the assault. (limerickpost.ie)
- investigationThere was no CCTV footage of the attack and no evidence that Babbington provoked Beumer. (limerickleader.ie)
- chargeBeumer is charged with assaulting the victim causing him harm and producing an improvised blade during the attack. (limerickpost.ie)
- chargeBeumer pleaded not guilty to assault causing harm and producing an improvised knife. (limerickleader.ie)
- chargeThe accused faced charges of assault causing harm and producing a makeshift knife. (limerickpost.ie)
- chargeBeumer pleaded not guilty by reason of insanity to assault causing harm and producing a bladed weapon. (limerickpost.ie)
- chargeBeumer pleaded not guilty by reason of insanity to assault causing harm and to producing a bladed weapon. (limerickleader.ie)
- courtA jury was sworn in before Limerick Circuit Criminal Court to hear the trial of Sean Beumer. (limerickpost.ie)
- courtThe jury of seven men and five women were told the trial would last throughout that week. (limerickpost.ie)
- courtThe prosecution said it would call witness testimony from consultant psychiatrists and staff at Cuan Mhuire. (limerickpost.ie)
- courtThe judge said the trial would get underway in earnest on Tuesday. (limerickpost.ie)
- courtBeumer pleaded not guilty by reason of insanity on the opening day of his trial. (limerickpost.ie)
- courtThe trial was at Limerick Circuit Criminal Court before Judge Colin Daly and a jury of seven men and five women. (limerickpost.ie)
- courtThe trial was before Judge Colin Daly and a jury of seven men and five women. (limerickleader.ie)
- courtThe trial was due to continue the following Wednesday. (limerickleader.ie)
- courtThe accused pleaded not guilty by reason of insanity before Limerick Circuit Criminal Court. (limerickpost.ie)
- courtThe jury of seven men and five women was expected to retire on Thursday to consider its verdict. (limerickpost.ie)
- courtA jury returned a unanimous verdict that Beumer was not guilty by reason of insanity at Limerick Circuit Criminal Court. (limerickpost.ie)
- courtJudge Colin Daly ordered a medical report on Beumer's mental health to be furnished to the court within 14 days after assessment at the Central Mental Hospital. (limerickpost.ie)
- courtA jury unanimously found Beumer not guilty of both charges by reason of insanity. (limerickleader.ie)
- courtThe judge ordered a medical report on Beumer's mental health after a further assessment at the Central Mental Hospital within 14 days. (limerickleader.ie)
- otherBeumer did not speak in court apart from entering the not guilty by insanity plea. (limerickpost.ie)
- otherThe trial continues on Wednesday. (limerickpost.ie)
- otherA sergeant agreed that Beumer had expressed remorse and cooperated with the garda investigation. (limerickleader.ie)
- otherA forensic psychiatrist gave uncontested evidence of a definite link between the missed medication and the assault. (limerickpost.ie)
- otherThe defence argued the accused was responsible for the attack but was not of sound mind at the time. (limerickpost.ie)
- otherBeumer had requested his anti-psychotic medication in the days before the attack but did not receive it, in line with the centre's policy at the time. (limerickpost.ie)
- otherThe psychiatrist said Beumer requires a multi-disciplinary medical approach to treating his schizophrenia, including an MRI scan of his brain. (limerickpost.ie)
- otherAaron Babbington sustained slash wounds to his throat and hand and received stitches at University Hospital Limerick. (limerickpost.ie)
- otherBabbington sustained three slash wounds to his throat and a slash wound to his thumb. (limerickleader.ie)
- otherBabbington received treatment in University Hospital Limerick. (limerickleader.ie)
- otherBeumer attended Cuan Mhuire on 29 November 2019 with an established diagnosis of paranoid schizophrenia. (limerickleader.ie)
The reporting
newest first- 18 Jul2025Victim of throat-slitting attack in Limerick went on to kill a man by slitting his throat
Court verdict in the 2019 Bruree attack: the jury found the accused not guilty by reason of insanity. This is a different incident from the 2023 Cork attack on the same victim in case 1864.
accused, Sean Beumer, 29, male, namedSean Beumervictim, Aaron Babbington, early 30s, male, irish (judged from name)Aaron Babbington - 11 Jul2025Throat slasher found not guilty by reason of insanity following attack at Limerick addiction treatment centre
Reports the jury's unanimous not guilty by reason of insanity verdict at Limerick Circuit Criminal Court, the psychiatric evidence given, the victim's injuries, and Judge Colin Daly's order for a further medical report.
accused, Sean Beumer, 29, male, namedSean Beumervictim, Aaron Babbington, 30s, maleAaron Babbington - 9 Jul2025Man who slashed another man’s throat did not receive medication for diagnosed mental health condition, court told
Trial report from before the jury verdict. Adds the trial evidence: the accused's schizophrenia diagnosis, the medication he did not receive, the psychiatric evidence on insanity, the closing speeches and the jury's expected retirement.
accused, Sean Buemer, 29, male, namedSean Buemervictim, Aaron Babbington, 30s, male, irish (judged from name)Aaron Babbington - 9 Jul2025Man blames 'brainwashing' for razor assault at Limerick addiction centre, trial hears
Trial report published 9 July 2025, before the verdict. Beumer pleaded not guilty by reason of insanity, the trial was continuing, and the article adds details of the defence case, the weapon and the evidence heard.
accused, Sean Beumer, 29, male, named, non-irish (judged from name)Sean Beumervictim, male - 8 Jul2025Thoughts of family being murdered made man slash innocent man’s throat at addiction centre
Trial report from the opening days of the trial. Beumer pleads not guilty by reason of insanity; the trial continues. Adds the Garda evidence summary, the medication detail, and the DNA match.
accused, Sean Beumer, 29, male, namedSean Beumervictim, male - 7 Jul2025Man pleads not guilty ‘by reason of insanity’ to charges of assault with an improvised blade at addiction treatment centre
Reports the not guilty by reason of insanity plea, the swearing in of the jury and the trial schedule, including the prosecution's planned witnesses. Does not name the alleged victim.
accused, Sean Beumer, 29, male, namedSean Beumervictim, male