Minister for Foreign Affairs Charlie Flanagan has again called on the British government to release its files on the Dublin and Monaghan bombings to an independent international body.
The minister was speaking at a ceremony to mark the 43rd anniversary of the bombings by the UVF which killed 34 people in what was the worst loss of life during the Troubles.
Mr Flanagan said the Dáil had passed a cross-party motion calling for the British government to open its files to an independent international judicial figure.
He said this had been pursued "vigorously" over the past year.
Margaret Urwin of the relatives group Justice for the Forgotten said these British files would deal with suspicions of high level collusion between the Loyalist bombers and the security forces
The Justice for the Forgotten group has met recently with the Police Ombudsman in Northern Ireland who is investigating the Glenanne Gang consisting of Loyalists, some of whom were serving members of the RUC or UDR.
The Barron Report found that some members of the group were likely to have been involved in the Dublin and Monaghan bombings.
The Glennane Gang is believed to have murdered up to 120 people, mainly Catholic civilians and to also have been responsible for the Miami Showband massacre.
The oration at today's ceremony was given by Denis Bradley, former vice-chairman of the Northern Ireland Policing Board and former co-chairman of the Consultative Group on the Past.