Case No. 9166Murder · Co. Donegal · 4 Apr 2006

Man remanded in custody over murder of Denis Donaldson

Denis Donaldson, a former senior Sinn Féin official, was shot dead at an isolated cottage in Donegal on April 4, 2006, after he was exposed as an MI5 informant. Antoin Duffy (49) was arrested by Donegal Division gardaí after his extradition from Scotland at the end of March and is charged with Donaldson's murder and five other offences. The Special Criminal Court remanded Duffy in custody, and a book of evidence was ordered to be served on July 6. At his appearance on June 8, 2026, his lawyers described serving the book of evidence as a complicated matter, and his counsel said he intends to apply for bail before the High Court.

  1. Reportednot reported
  2. Arrestednot reported
  3. Chargednot reported
  4. In court9 Jun
  5. Verdict
  6. Sentenced
reportedhappened, not reportedlatest stagenot yet

Key facts

consolidated from all reports
What happened
Denis Donaldson, a former senior Sinn Féin official, was shot dead; one source calls him a high-ranking Sinn Féin official.
Where
Donaldson was shot dead at an isolated cottage in Donegal.
When
Donaldson was shot dead on April 4, 2006.
Cause
Donaldson was shot after being exposed as an MI5 informant.
Other details
The Real IRA later claimed responsibility for the murder.
Investigation
Antoin Duffy (49) was arrested by Donegal Division gardaí after his extradition from Scotland at the end of March.
Charges
  • Antoin Duffy is charged with the murder of Denis Donaldson.
  • Duffy faces six charges in total.
  • Duffy is charged with the attempted murder of Liam McGinley on November 19, 2007, at Meenaboll, Churchill.
Weapon
Duffy is charged with possession of a shotgun and ammunition with intent to endanger life at Cloghercor, Doochary, between April 3 and April 4, 2006.
In court
  • Duffy appeared before the three-judge Special Criminal Court via video link on June 8, 2026.
  • Mr Justice Patrick McGrath remanded Duffy in custody.
  • Duffy was directed to appear on July 6 for service of the book of evidence on his solicitor.
  • The defence described the service of the book of evidence as a complicated matter.
  • Duffy's counsel said he intends to apply for bail before the High Court.
Sentence
No sentence has been reported.
15 statements extracted from the articles
  • whereDenis Donaldson was shot dead at an isolated cottage in Donegal. (donegallive.ie)
  • whenDonaldson was shot dead on April 4, 2006. (donegallive.ie)
  • causeDonaldson was shot after being exposed as an MI5 informant. (donegallive.ie)
  • investigationDuffy was arrested by Donegal Division gardaí after his extradition from Scotland at the end of March. (donegallive.ie)
  • chargeAntoin Duffy is charged with the murder of Denis Donaldson. (donegallive.ie)
  • chargeDuffy faces six charges in total. (donegallive.ie)
  • chargeDuffy is charged with possession of a shotgun and ammunition with intent to endanger life at Cloghercor, Doochary, between April 3 and April 4, 2006. (donegallive.ie)
  • chargeDuffy is charged with the attempted murder of Liam McGinley on November 19, 2007, at Meenaboll, Churchill. (donegallive.ie)
  • courtDuffy appeared before the three-judge Special Criminal Court via video link. (donegallive.ie)
  • courtMr Justice Patrick McGrath remanded Duffy in custody. (donegallive.ie)
  • courtDuffy was directed to appear on July 6 for service of the book of evidence on his solicitor. (donegallive.ie)
  • courtThe defence described the service of the book of evidence as a complicated matter. (donegallive.ie)
  • courtDuffy's counsel said he intends to apply for bail before the High Court. (donegallive.ie)
  • otherDonaldson was a high-ranking Sinn Féin official. (donegallive.ie)
  • otherThe Real IRA later claimed responsibility for the murder. (donegallive.ie)

The reporting

newest first
  1. 9 Jun2026
    Service of book of evidence against man charged with murder ‘a complicated matter’

    Court report on the Special Criminal Court appearance of Antoin Duffy on 8 June 2026 (reported 9 June). Adds the charges, remand and bail intention, and background on the victim and the 2006 shooting.

    accused, Antoin Duffy, 49, male, named, irish (judged from name)Antoin Duffyvictim, Denis Donaldson, 55, male, irish (judged from name)Denis Donaldson