The Dublin and Monaghan bombings on 17 May 1974 were a series of car bombings in Dublin and Monaghan in the Republic of Ireland. The attacks left 33 persons dead and almost 300 injured: the largest number of casualties in any single day in the Troubles. The Loyalist paramilitary group, the Ulster Volunteer Force, claimed responsibility for the bombings in 1993. There are allegations, however, that British Intelligence colluded in the bombings. These allegations are contested by both the British Government and those accused. It was the worst paramilitary attack in terms of fatalities in twentieth-century Ireland. The majority of the victims were young women, although the ages of the dead ranged from five months to 80 years. There were no warnings issued before three car bombs exploded during Dublin's rush-hour when the streets were crowded with shoppers and workers returning home. Ninety minutes later, a fourth car bomb exploded in Monaghan.