Wednesday 28 October 2026Compiled from published reports. Every claim links to its source.

Ireland Crime

Every case followed from the first report to the sentence, or to where the reporting stopped.

Case No. 6320Assault causing serious harm · Co. Cork · 26 Mar 2022

Court of Appeal increases sentence for Cork hammer attack

On 26 March 2022, Ian Horgan, 40, attacked Hassan Baker, 30 (one report says 29), and Mary O'Callaghan, 67 (one report says 66), with a claw-hammer at their home at MacCurtain Villas in Cork City. Horgan pleaded guilty at Cork Circuit Criminal Court on 30 January 2023 and was sentenced by Judge Helen Boyle to nine years, with the final six months suspended, for the attack on Baker. The Director of Public Prosecutions appealed that sentence as unduly lenient. On 13 March 2024 the Court of Appeal increased the sentence to 11 years and three months, with no part suspended.

  1. Reportednot reported
  2. Arrestednot reported
  3. Chargednot reported
  4. In courtnot reported
  5. Verdictnot reported
  6. Sentenced13 Mar
    2 reports
reportedhappened, not reportedlatest stagenot yet

Key facts

consolidated from all reports
What happened
  • Hassan Baker suffered a depressed skull fracture and fractures to the eye socket and left cheekbone, and needed brain surgery.
  • Mary O'Callaghan's wrist was broken when she tried to intervene.
Where
The attack took place at the victims' home at MacCurtain Villas in Cork City; one key fact gives the address as McCurtain Villas, College Street, Cork.
When
The attack happened at around 4pm on 26 March 2022.
Weapon
The attacker used a claw-hammer and hit Baker repeatedly on the head after he slumped to the floor unconscious.
Other details
  • Horgan forced his way into the home, disguised himself before the attack, and filmed the aftermath on his phone.
  • The Court of Appeal said the offence was of the most serious kind because of the degree of preparation and pre-planning, and the trial judge had noted Horgan's lengthy history of violence.
Investigation
CCTV captured Horgan in the area of MacCurtain Villas changing his clothes and footwear.
Charges
Horgan was convicted of assault causing serious harm to Hassan Baker and assault causing harm to Mary O'Callaghan.
In court
  • Horgan pleaded guilty at Cork Circuit Criminal Court on 30 January 2023.
  • The Director of Public Prosecutions appealed the sentence as unduly lenient, arguing the headline sentence should have been 15 years and that previous convictions for manslaughter and rape were not properly factored in; the defence argued the sentence was appropriately structured.
Sentence
  • Judge Helen Boyle sentenced Horgan to nine years for the attack on Baker, with the final six months suspended, reported as 8½ years in jail.
  • On 13 March 2024 the Court of Appeal set a 15-year headline sentence, applied a 25 per cent guilty-plea discount, and increased the sentence to 11 years and three months with no part suspended.
27 statements extracted from the articles
  • whatBaker's skull and left cheekbone were fractured, and Mary O'Callaghan's wrist was broken. (irishtimes.com)
  • whatHassan Baker suffered depressed skull, eye-socket and cheek fractures. (irishmirror.ie)
  • whatThe accused broke the wrist of Mary O'Callaghan when she tried to intervene. (irishmirror.ie)
  • whereThe attack took place at the victims' home at MacCurtain Villas in Cork City. (irishtimes.com)
  • whereThe attack took place at McCurtain Villas, College Street, Cork. (irishmirror.ie)
  • whenThe attack happened on March 26th, 2022. (irishtimes.com)
  • whenThe attack occurred at around 4pm on 26 March 2022. (irishmirror.ie)
  • weaponHorgan hit Baker repeatedly on the head with a hammer after Baker slumped to the floor unconscious. (irishtimes.com)
  • weaponThe attacker used a claw-hammer. (irishmirror.ie)
  • investigationCCTV captured the accused in the area of McCurtain Villas changing into different clothes and footwear. (irishmirror.ie)
  • chargeHorgan was convicted of assault causing serious harm to Hassan Baker and assault causing harm to Baker's mother, Mary O'Callaghan. (irishtimes.com)
  • courtThe Director of Public Prosecutions appealed the original sentence as unduly lenient. (irishtimes.com)
  • courtThe original sentence was imposed at Cork Circuit Criminal Court. (irishtimes.com)
  • courtThe defence argued that the trial judge was not unduly lenient and had structured the sentence appropriately. (irishtimes.com)
  • courtHorgan pleaded guilty at Cork Circuit Criminal Court on 30 January 2023. (irishmirror.ie)
  • courtThe Court of Appeal said it would allow the undue leniency application made by the State. (irishmirror.ie)
  • sentenceIan Horgan's jail sentence for the hammer attack was increased from 8½ years to more than 11 years. (irishtimes.com)
  • sentenceThe Court of Appeal said the original 12-year sentence was unduly lenient and should have been at the very upper end of the scale at 15 years. (irishtimes.com)
  • sentenceThe court set a 15-year headline sentence with a 25 per cent discount for Horgan's guilty plea, resulting in 11¼ years. (irishtimes.com)
  • sentenceThe court saw no merit in suspending any part of the sentence, given Horgan's previous record. (irishtimes.com)
  • sentenceHorgan was originally sentenced by Judge Helen Boyle to nine years, with the final six months suspended, for the attack on Mr Baker. (irishmirror.ie)
  • sentenceThe Court of Appeal increased the sentence for the assault on Mr Baker to 11 years and three months with no portion suspended. (irishmirror.ie)
  • sentenceThe judge said the appropriate headline sentence was 15 years. (irishmirror.ie)
  • otherHorgan forced his way into the home and disguised himself before the attack. (irishtimes.com)
  • otherHorgan filmed both victims after the attack. (irishtimes.com)
  • otherThe Court of Appeal said the offence was of the most serious kind because of the degree of preparation and pre-planning involved. (irishtimes.com)
  • otherThe judge said Horgan had a lengthy history of violence. (irishmirror.ie)

The reporting

newest first
  1. 13 Mar2024
    Sentencedirishmirror.ie, first report
    Convicted rapist and killer gets longer jail term for 'blood bath' hammer attack

    Reports the Court of Appeal's re-sentencing after an undue leniency application by the State, the court's reasoning, and the attack details shown in the court. It also gives the original sentence and the guilty plea history.

    convicted, Ian Horgan, 40, male, named, irish (judged from name)Ian Horganvictim, Hassan Baker, 29, maleHassan Bakervictim, Mary O'Callaghan, 66, female, irish (judged from name)Mary O'Callaghan
  2. 13 Mar2024
    Sentencedirishtimes.com, follow-up
    Jail sentence increased for convicted killer and rapist for hammer attack on man and his mother

    Court of Appeal increased the sentence from 8½ years to 11¼ years on a DPP undue-leniency appeal, after the original sentence was imposed at Cork Circuit Criminal Court. The article adds that the court set a 15-year headline sentence with a 25 per cent guilty-plea discount and gave no suspended portion.

    convicted, Ian Horgan, 40, male, named, irish (judged from name)Ian Horganvictim, Hassan Baker, 30, maleHassan Bakervictim, Mary O'Callaghan, 67, female, irish (judged from name)Mary O'Callaghan