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. 0303Shooting · Co. Dublin · 5 Jul 2026

Man released without charge over fatal shooting in Dún Laoghaire

Mark Cullen, 39, was shot in the leg with a handgun at Patrician Park, Kill Avenue, Dún Laoghaire, on 5 July 2026 and died from severe blood loss after trying to move from the scene. He had gone by arrangement to meet men known to him at about 8.30am, and Gardaí suspect the shooting was a botched punishment or intimidation attack. A man in his 30s was arrested on 6 July and released without charge, and a man in his 40s was arrested on 10 September and released without charge on 12 September. A file is being prepared for the Director of Public Prosecutions and investigations are ongoing.

  1. Reported12 Sep
  2. Arrested10 Sep
    5 reports
  3. Charged
  4. In court
  5. Verdict
  6. Sentenced
reportedhappened, not reportedlatest stagenot yet

Key facts

consolidated from all reports
What happened
Mark Cullen, 39, was shot in the leg at Patrician Park, Kill Avenue, Dún Laoghaire, on 5 July 2026 and died from severe blood loss after attempting to move from the scene to seek help.
Where
The shooting took place in a laneway at Patrician Park, Kill Avenue, Dún Laoghaire, Co. Dublin; Cullen was from Shankill in south Dublin.
When
The shooting occurred at about 8.30am on Sunday, 5 July 2026, when Cullen had gone by arrangement to meet men known to him.
Cause
Gardaí suspect the shooting was a botched punishment or intimidation attack and that the gunman intended to wound Cullen in the leg rather than kill him.
Weapon
At least one man at the scene was armed with a loaded handgun.
Investigation
  • A man in his 30s was arrested on 6 July 2026 under Section 30 of the Offences Against the State Act 1939 and later released without charge.
  • A man in his 40s was arrested on 10 September 2026 under Section 50 of the Criminal Justice Act 2007 and released without charge on 12 September 2026.
  • A file is being prepared for the Director of Public Prosecutions and investigations are ongoing.
Other details
Cullen had links to south Dublin drug dealing, but detectives have not established whether the shooting was linked to organised crime or a personal dispute.
43 statements extracted from the articles
  • whatMark Cullen, 39, died after being shot in the leg at Patrician Park, Kill Avenue, Dún Laoghaire. (irishtimes.com)
  • whatCullen tried to move from the scene to seek help before succumbing to his injuries. (irishtimes.com)
  • whatMark Cullen, 39, was shot dead at Patrician Park, Kill Avenue, on 5 July 2026 (dublinlive.ie)
  • whatMark Cullen was shot in the leg (dublinlive.ie)
  • whatMark Cullen, 39, died after being shot in the leg (irishmirror.ie)
  • whatMark Cullen, 39, was shot in the leg at Patrician Park, Kill Avenue, Dún Laoghaire, on 5 July 2026 (irishtimes.com)
  • whatA man aged in his 40s was arrested on Thursday as part of the investigation (irishtimes.com)
  • whatThe man was released without charge (irishtimes.com, garda.ie)
  • whatHe is the second man to be detained and released without charge in the investigation (irishtimes.com)
  • whereThe fatal shooting occurred in Patrician Park, Kill Avenue, Dún Laoghaire, Co. Dublin (garda.ie)
  • whereHe is detained at a Garda station in the Dublin Metropolitan Region (garda.ie)
  • whereThe shooting occurred in a laneway. (irishtimes.com)
  • whereThe shooting took place at Patrician Park, Kill Avenue, Dún Laoghaire, Dublin (dublinlive.ie, irishmirror.ie)
  • whereCullen was from Shankill in south Dublin (irishtimes.com)
  • whenThe fatal shooting occurred on 5 July 2026 (garda.ie)
  • whenCullen had gone by arrangement to meet men known to him at Patrician Park at about 8.30am. (irishtimes.com)
  • whenThe shooting occurred on the morning of Sunday, 5 July 2026 (irishmirror.ie)
  • whenThe incident took place on Sunday 5 July 2026. (garda.ie)
  • causeThe shooting was a suspected intimidation or punishment attack gone wrong. (irishtimes.com)
  • causeThe handgun was discharged, wounding Cullen in the leg and resulting in his death at the scene following severe blood loss. (irishtimes.com)
  • causeGardaí suspect the gunman intended to wound the victim in the leg rather than kill him. (irishtimes.com)
  • causeThe injury was so severe that Cullen bled to death at the scene. (irishtimes.com)
  • causeThe shooting is understood to have been a possible punishment shooting gone wrong (irishmirror.ie)
  • causeGardaí are working on the theory that the shooting was a botched punishment or intimidation attack (irishtimes.com)
  • weaponAt least one of the men at the scene was armed with a loaded handgun. (irishtimes.com)
  • investigationThe arrested man is detained under Section 50 of the Criminal Justice Act 2007 (garda.ie)
  • investigationInvestigations into the fatal shooting are ongoing (garda.ie, irishmirror.ie)
  • investigationGardaí arrested a man aged in his 40s on Thursday morning in connection with the investigation. (irishtimes.com)
  • investigationThe arrested man is being held at a Garda station in Dublin. (irishtimes.com)
  • investigationA man aged in his 30s was previously arrested but later released without charge. (irishtimes.com)
  • investigationA file has been prepared for the Director of Public Prosecutions. (irishtimes.com)
  • investigationInvestigations are ongoing. (irishtimes.com, dublinlive.ie)
  • investigationThe man is detained under Section 50 of the Criminal Justice Act 2007 at a Garda Station in the Dublin Metropolitan Region (dublinlive.ie)
  • investigationGardaí continue to investigate the fatal shooting incident (dublinlive.ie)
  • investigationA man in his 30s was arrested on 6 July and detained under Section 30 of the Offences Against the State Act 1939 (irishmirror.ie)
  • investigationThe man in his 30s was later released without charge (irishmirror.ie)
  • investigationThe man in his 40s is detained under Section 50 of the Criminal Justice Act 2007 at a Garda station in the Dublin Metropolitan Region (irishmirror.ie)
  • investigationA file is being prepared for the Director of Public Prosecutions (irishtimes.com)
  • investigationA file will be prepared for the Director of Public Prosecutions. (garda.ie)
  • investigationInvestigations into the shooting are ongoing. (garda.ie)
  • otherInvestigating gardaí believe Cullen had links to several men involved in south Dublin drug dealing. (irishtimes.com)
  • otherDetectives have not established whether the shooting was linked to organised crime or a personal dispute. (irishtimes.com)
  • otherA man in his 40s was arrested in connection with the investigation. (garda.ie)

The reporting

newest first
  1. 12 Sep2026
    Arrestedgarda.ie, follow-up
    12/09/2026 Update (4): Fatal Shooting Incident, Dún Laoghaire, Co. Dublin - 5th July 2026

    Fourth update on the investigation. The man in his 40s who was arrested has been released without charge, with a file to be prepared for the DPP.

    suspect, 40s, male
  2. 12 Sep2026
    Reportedirishtimes.com, follow-up
    Gardaí release a second man without charge in Dún Laoghaire shooting investigation

    Reports the release of a second man without charge; Gardaí working on theory of botched punishment or intimidation attack; file being prepared for the DPP; investigations ongoing.

    victim, Mark Cullen, 39, male, irish (judged from name)Mark Cullensuspect, 40s, male
  3. 11 Sep2026
    Arrestedirishmirror.ie, follow-up
    Man arrested in connection with fatal shooting of Mark Cullen

    Reports a new arrest of a man in his 40s on 10 September 2026, confirms a man in his 30s was previously arrested on 6 July and released without charge, and adds that the shooting is understood to have been a possible punishment shooting gone wrong.

    victim, Mark Cullen, 39, male, irish (judged from name)Mark Cullensuspect, 30s, malesuspect, 40s, male
  4. 11 Sep2026
    Arresteddublinlive.ie, follow-up
    Man, 40s, arrested over fatal shooting of Mark Cullen in Dún Laoghaire

    Reports the arrest of a man in his 40s on 10 September 2026 and his detention under Section 50 of the Criminal Justice Act 2007, confirming Gardaí continue to investigate the fatal shooting.

    victim, Mark Cullen, 39, male, irish (judged from name)Mark Cullensuspect, 40s, male
  5. 10 Sep2026
    Arrestedirishtimes.com, follow-up
    Second man arrested in connection with fatal Dún Laoghaire shooting

    Reports the arrest of a second man (aged in his 40s) and provides further detail: the shooting was a suspected punishment attack, the victim was shot in the leg with a loaded handgun in a laneway, bled to death, and had links to south Dublin drug dealing. A file has been prepared for the DPP.

    victim, Mark Cullen, 39, male, irish (judged from name)Mark Cullensuspect, 40s, malesuspect, 30s, male
  6. 10 Sep2026
    Arrestedgarda.ie, follow-up
    10/09/2026 Update (3): Fatal Shooting Incident, Dún Laoghaire, Co. Dublin- 5th July 2026

    Reports the arrest of a male in his 40s on 10 September 2026 in connection with the fatal shooting; he is detained under Section 50 of the Criminal Justice Act 2007 at a Garda station in the Dublin Metropolitan Region.

    suspect, 40s, male