Alleged collusion by British military intelligence in the Dublin bombings should be investigated, relatives of the victims said yesterday.
Relatives of the 33 people who died and the hundreds who were injured and their legal representatives held a press conference in the House of Commons to launch an international appeal for information about the 1974 atrocities.
The Ulster Volunteer Force is suspected of planting the bombs but questions have been raised in the media about possible British security and intelligence involvement in planning the bombings and supplying the explosives.
Members of Justice for the Forgotten, the group representing the relatives, said they had submitted to the Commission of Inquiry a secret British military document from 1971, forensic reports and Ministry of Defence correspondence which gave rise to the concern that the bombings were "inspired" by the British army.
Calling on former British politicians, army personnel and civil servants with connections to Northern Ireland to come forward with information, Mr Cormac O Dulachain, one of the lawyers representing the group, said it was not the group's function to prove collusion "but to establish the truth".
He said the intelligence document, entitled Military Appreciation, provided evidence of a British military strategy in Northern Ireland "that would lead to a hidden-hand policy" and included reference to the formation of SAS surveillance squads ordered to "mystify, mislead and destroy the terrorists".
Yesterday, members of the Rosemary Nelson Campaign for Truth and Justice (Britain) held a vigil at Downing Street to mark the second anniversary of her murder and called for an independent inquiry into her death.