Sinn Féin leader Gerry Adams has once again denied any involvement in the disappearance and murder of Belfast woman Jean McConville in 1972.
Mr Adams accused Fianna Fáil leader Micheál Martin of "weasel words" and of trying to score party political points after he raised the issue.
Asking the Taoiseach about the Boston College tapes, Mr Martin urged Mr Adams to make a statement on the matter, as the book Voices from the Grave stated that he was involved in the disappearance.
Mr Martin said if similar accusations were made about any other member of the Dáil, there would be "clarion calls" for them to make a statement.
Taoiseach Enda Kenny said he had had words with Mr Adams about this issue before, adding that he was meeting families of The Disappeared this evening to discuss attempts to recover their bodies.
Responding, Mr Adams said the tapes were now in the hands of the PSNI and they will do with that what they want.
He said he had consistently rejected claims that he had knowledge of or involvement in the killing of Mrs McConville.
He said the current generation of republicans, in which he included himself, was trying to undo the wrong that was done, and that the IRA had apologised.
Mr Adams said the people who made the claims were "implacable opponents of the peace process" who thought the war should have continued, and who used these claims to attack him.
He once again urged anyone with any information about the whereabouts of remains of any of The Disappeared which have still not been recovered to come forward.