The family of a garda shot dead in a 1970 bank robbery have called for his murder to be investigated as part of any new inquiry into the Arms Trial.
The children of the dead officer say information supplied to them over the years suggests the circumstances leading to his death and "the subsequent reaction" have yet to be fully explained.
Nobody has been convicted of the murder of Garda Richard Fallon, who was killed on April 3rd, 1970, while chasing raiders who had just held up the Royal Bank of Ireland at Arran Quay, Dublin.
The republican splinter group, Saor Eire, was suspected of carrying out the raid, one of a series attributed to the group in the late 1960s and early 1970s. A man was subsequently charged but acquitted.
Now Mr Finian Fallon, one of five children of the dead garda, has called for the case to be reopened in the light of recent new information about the Arms Trial.
He told The Irish Times that information given to the family by "individuals claiming to be aware of events at the time" suggested the full story had not been told.
"We are seeking to have these claims investigated in order to close this chapter of our family's history, and so that the truth of this tragic event can finally be told," Mr Fallon said.
The timing of the incident had created "political tensions" in 1970. "This may partly explain the dearth of material relating to this event made available through the National Archives earlier this year," he added.