The Government will tomorrow publish the long-awaited report on the 1974 Dublin and Monaghan bombings which killed 33 people.
The report will address persistent allegations that the British security services colluded with the bombers.
The independent investigation into the biggest unsolved criminal case in the history of the State was led by Mr Justice Barron.
The report was originally expected a year ago, but the work of the inquiry was hampered by a lack of co-operation from the British authorities.
The report is to be referred to an Oireachtas committee, which may hold hearings on the issue. Referring to the failure of the British authorities to hand over documents sought by Mr Justice Barron, the Taoiseach said recently that it would be "over-optimistic" to say the judge had received all the co-operation he had sought.
A copy of the report will also be given to the Dublin City Coroner, Dr Brian Farrell, who has formally reopened the inquests into the deaths of the 26 people who died in the Dublin bombings, six who died in the Monaghan bombing and one who died some time after the Monaghan bombing.
He reopened the Dublin inquests in June, and the Monaghan inquests last month, adjourning both until all evidence had been gathered. He has asked the Garda Commissioner for files on the attacks.
Inquests were held in relation to the deaths of six of the Monaghan victims in 1974, but at the request of the Garda, the Dublin inquests were immediately adjourned after the hearing began in 1974.
The reopening of the inquests was sought by the Justice for the Forgotten group, which represents families of victims of both bombings.
Meanwhile the Minister for Justice, Mr McDowell, has still not released a report by retired Canadian supreme court judge Mr Peter Cory on alleged collusion between individual gardaí and the IRA. Mr Justice Cory delivered his report to the Taoiseach, Mr Ahern, on October 7th.
It examines whether some gardaí were involved in the murders of Lord Justice and Lady Gibson in 1987 and in the murders in 1989 of two senior RUC officers, Supt Bob Buchanan and Insp Harry Breen. The judge has delivered a separate report to the British government examining allegations of collusion by the British security services in the murders of Pat Finucane, Rosemary Nelson, Robert Hamill and Billy Wright.
Mr McDowell is also due to make a statement to the Dáil soon on another report, investigating allegations that some gardaí withheld information from police in the North which could have helped to prevent the Omagh bombing in August 1998.
The report was produced by a three-man committee, chaired by the former secretary to the Government, Mr Dermot Nally.