Next week will see the 49th anniversary of the Dublin/Monaghan bombings which killed 33 people and badly injured hundreds of others.
Local TD Brendan Smith has said it is "unacceptable" that the British Government has not responded to the Irish parliament's "legitimate and unanimous" requests for an independent legal expert to be given access to the Dublin and Monaghan bombings files.
The Cavan-Monaghan TD again raised the matter in the Dáil ahead of the anniversary in the past 24 hours.
Deputy Smith said: "That day, 17 May 1974, was the darkest day of all during the era known as the Troubles when unfortunately, there were many bad days on this island with so much loss of life and suffering.
He has been speaking to our reporter Ronan Gargan about the anniversary that will be marked on Wednesday next.
Deputy Smith told Ronan that he has urged the Taoiseach to raise this "very important" matter with the British Prime Minister and other British Government members.