Mr Adams allegedly sent an e-mail to the Garda Commissioner naming party figures
It is reported that the Sinn Féin leader Gerry Adams has named a number of party figures who 'may have' information on a murder inquiry.
Chief prison officer at Portlaoise Prison, Brian Stack, was shot by the IRA in 1983 and died 18 months later.
He was shot in the back of the neck after leaving a boxing contest at the National Stadium on the South Circular Road in Dublin.
His family were told in 2013 that the IRA admitted to his murder.
According to the Irish Independent, Mr Adams sent an e-mail to the Garda Commissioner this year - naming a number of senior party figures.
He claimed to have been given the names by Brian Stack's son, Austin.
However Austin Stack told Newstalk Breakfast that is not the case.
"I can quite categorically state that at no stage did I give names to Gerry Adams.
"He says that I gave him the names - that is not correct.
"I never had a discussion with him around suspects or around names, and I gave a statement to the gardaí in relation to that last week".