The Taoiseach yesterday challenged the Sinn Féin leader to make a statement
The Sinn Féin leader is expected to make a statement in the Dáil this evening about the murder of Brian Stack.
Gerry Adams is expected to be given Dáil time to speak on the matter at 5pm this evening.
Mr Stack - who was chief prison officer at Portlaoise Prison - was shot by the IRA in 1983 and died 18 months later.
The Sinn Féin leader says the names he gave to the Garda Commissioner in connection with the murder were passed on by the victim's son - something Austin Stack has denied.
Deputy Adams was yesterday challenged by the Taoiseach to make a statement, after claims Deputy Adams had helped the victim's family to make contact with an IRA official who oversaw an internal investigation.
Speaking to Newstalk Breakfast this morning, Austin Stack said his motives are simple.
"All my family want on this is the truth," he said.
"We're not bitter people, and we're not looking for our pound of flesh. We just want the truth - and I don't think that's too much to ask."