Loyalist bombers who killed 34 people in Ireland may have had help from members of the British security forces, the Barron Report found tonight.
However, the report into bombings in Dublin and Monaghan on the same night almost 30 years ago found no evidence to suggest that senior police or army figures were in any way involved in the bombings.
The inquiry was also critical of the Government at the time of the bombings in 1974, and of the original Garda investigation.
But it's not understood to contain allegations of collusion at higher levels of the British government at the time.
Chairman of the Dáil Justice Committee Sean Ardagh said further inquiries into the Dublin and Monaghan Bombings may be necessary.
On May 17, 1974, three car bombs exploded in Dublin city centre, on Parnell Street, Talbot street and South Leinster Street.
No warnings were given, and the explosions killed 26 people, including a pregnant woman.
A short time later, a bomb exploded in Monaghan town.
A further seven people were killed.
No one was ever prosecuted in connection with the bombings.
Relatives of those killed hope the report will bring them a step closer to finding out the truth about the attacks.