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. 6018Manslaughter · Co. Cork · 28 Dec 2022

Teenager found guilty of manslaughter over death of Matt O’Neill in Carrigaline, Co Cork

On 28 December 2022 Matt O'Neill, 29, was assaulted at Glenwood Estate in Carrigaline, Co Cork, and died in hospital on 8 January 2023. Jordan Deasy, 19, was arrested at a flat in Crosshaven on New Year's Eve 2022 and charged with murder, and co-accused Ricardo Hoey, 21, is also charged with murder. In April 2024 the jury at the Central Criminal Court in Cork acquitted Deasy of murder but found him guilty of manslaughter, and it failed to reach a verdict on Hoey's murder charge. The judge sent the jury home to resume deliberations on Hoey's charge on Monday, which is the latest reported development.

  1. Reportednot reported
  2. Arrestednot reported
  3. Chargednot reported
  4. In courtnot reported
  5. Convicted25 Apr
    2 reports
  6. Sentenced
reportedhappened, not reportedlatest stagenot yet

Key facts

consolidated from all reports
What happened
  • Jordan Deasy, 19, of Ravensdale, Heron's Wood, Carrigaline, was found not guilty of murder but guilty of the manslaughter of Matt O'Neill, 29.
  • Matt O'Neill died in hospital on 8 January 2023, 11 days after the assault.
Where
The assault took place at Glenwood Estate, Carrigaline, Co Cork.
When
The incident took place on 28 December 2022.
Cause
  • A pathologist said Matt O'Neill's fatal injuries were blunt force trauma to the head from blows and a fall, including a traumatic axonal brain injury.
  • Matt O'Neill was kicked in the head after a verbal altercation became physical.
  • Deasy told gardaí he hit Matt O'Neill because O'Neill was walking towards him with a bottle, and Hoey told gardaí he pushed him once and kicked him once while he was on the ground.
  • A defence pathologist agreed under prosecution questioning that the second assault by the two defendants was a substantial contribution to the death.
Other details
A defence pathologist said a small subdural haematoma from an earlier assault could have caused a lucid interval, and the pathologist discounted a defence suggestion that an assault on 24 December had left O'Neill vulnerable.
Investigation
Deasy was arrested at a flat in Crosshaven on New Year's Eve 2022, and Dr Margaret Bolster carried out the post-mortem on 9 January 2023.
Charges
Deasy was originally charged with murder, and Ricardo Hoey, 21, of Ardcarrig, Carrigaline, is also charged with murder; both denied the murder.
In court
  • The trial was presided over by Ms Justice Siobhan Lankford and lasted 13 days with 36 witnesses, at the Central Criminal Court in Cork (one report says the Criminal Courts of Justice in Cork).
  • The jury took almost 15 hours (one report) or 14 hours and 47 minutes (another report) to return an 11-1 majority verdict on Deasy.
  • The jury failed to reach a verdict on Hoey's murder charge after 17 hours and 44 minutes, and the judge sent it home to resume deliberations on Monday.
27 statements extracted from the articles
  • whatA teenager was found guilty of the manslaughter of Matt O’Neill (29) who died 11 days after he was assaulted near his home in Carrigaline, Co Cork. (irishtimes.com)
  • whatMatt O’Neill died in hospital on 8 January 2023. (irishmirror.ie)
  • whereThe assault took place at Glenwood Estate, Carrigaline, Co Cork. (irishtimes.com, irishmirror.ie)
  • whenThe incident took place on 28 December 2022. (irishtimes.com)
  • whenThe incident happened on 28 December 2022. (irishmirror.ie)
  • causeA pathologist said Matt O’Neill’s fatal injuries resulted from blunt force trauma to the head, consistent with a combination of blows and a fall. (irishtimes.com)
  • causeDeasy told gardaí that he hit Matt O’Neill because O’Neill was walking towards him with a bottle. (irishtimes.com)
  • causeProsecution counsel put to a defence pathologist that the second assault by the two defendants was a substantial contribution to O’Neill’s death, and he agreed. (irishtimes.com)
  • causeMatt O’Neill was kicked in the head after a verbal altercation became physical. (irishmirror.ie)
  • causeThe post-mortem found blunt force trauma to the head from blows and a fall, and a traumatic axonal brain injury. (irishmirror.ie)
  • investigationDeasy was arrested at a flat in Crosshaven on New Year’s Eve, 2022. (irishtimes.com)
  • investigationDr Margaret Bolster carried out the post-mortem on Matt O’Neill on 9 January 2023. (irishmirror.ie)
  • chargeJordan Deasy was originally charged with the murder of Matt O’Neill. (irishmirror.ie)
  • chargeCo-accused Ricardo Hoey is also charged with the murder of Matt O’Neill, and the jury was still deliberating on his case. (irishmirror.ie)
  • courtThe jury acquitted Jordan Deasy of murder but found him guilty of manslaughter. (irishtimes.com)
  • courtThe jury at the Central Criminal Court in Cork took almost 15 hours to reach an 11-1 majority verdict on Deasy. (irishtimes.com)
  • courtThe jury failed to reach a verdict on the murder charge against co-accused Ricardo Hoey after 17 hours and 44 minutes of deliberation. (irishtimes.com)
  • courtThe judge sent the jury home to resume deliberations on Monday on the murder charge against Hoey. (irishtimes.com)
  • courtBoth Deasy and Hoey had denied the murder of Matt O’Neill. (irishtimes.com)
  • courtThe trial at the Criminal Courts of Justice in Cork lasted 13 days and the jury heard from 36 witnesses. (irishtimes.com)
  • courtJordan Deasy was found not guilty of murder but guilty of manslaughter. (irishmirror.ie)
  • courtThe jury deliberated for 14 hours and 47 minutes before returning its verdict. (irishmirror.ie)
  • courtThe trial was presided over by Ms Justice Siobhan Lankford. (irishmirror.ie)
  • otherHoey told gardaí he pushed the deceased once and kicked him once when he was on the ground. (irishtimes.com)
  • otherMatt O’Neill was involved in another incident on Christmas Eve, about four days before his death. (irishtimes.com)
  • otherA defence pathologist said a small subdural haematoma from the earlier assault could have produced a lucid interval before symptoms emerged. (irishtimes.com)
  • otherA defence suggestion that an earlier assault on 24 December could have left Matt O’Neill vulnerable was discounted by the pathologist. (irishmirror.ie)

The reporting

newest first
  1. 25 Apr2024
    Convictedirishmirror.ie, first report
    Teenager found guilty of manslaughter after death of 29-year-old man in Cork

    Reports the jury verdict at the Central Criminal Court sitting in Cork: Jordan Deasy convicted of manslaughter, and the jury still deliberating on co-accused Ricardo Hoey's murder charge. Adds the post-mortem evidence, the cause of death and the date of death.

    convicted, Jordan Deasy, 19, male, named, irish (judged from name)Jordan Deasyaccused, Ricardo Hoey, 21, namedRicardo Hoeyvictim, Matt O'Neill, 29, male, irish (judged from name)Matt O'Neill
  2. 25 Apr2024
    Convictedirishtimes.com, follow-up
    Teenager found guilty of manslaughter of Matt O’Neill (29)

    Reports the Central Criminal Court verdict: Jordan Deasy convicted of manslaughter and acquitted of murder; jury failed to reach a verdict on the murder charge against co-accused Ricardo Hoey, who is to face resumed deliberations.

    convicted, Jordan Deasy, male, named, irish (judged from name)Jordan Deasyaccused, Ricardo Hoey, 21, male, named, irish (judged from name)Ricardo Hoeyvictim, Matt O'Neill, 29, male, irish (judged from name)Matt O'Neill