Denis Donaldson

Denis Donaldson

Denis Martin Donaldson (Short Strand, Belfast, Northern Ireland, 1950 – 4 April 2006 in County Donegal, Republic of Ireland) was a volunteer in the Provisional Irish Republican Army (IRA) and a member of Sinn Féin who was exposed in December 2005 as an informer in the employment of MI5 and the Special Branch of the Police Service of Northern Ireland (formerly the Royal Ulster Constabulary). It was initially believed that the Provisional IRA were responsible for his killing although the Real IRA claimed responsibility for his murder almost three years later.