Taoiseach Enda Kenny has again ruled out reopening the Moriarty Tribunal to investigate the Lowry tapes.
A recording of Independent TD Michael Lowry has emerged since the tribunal issued its final report.
Mr Kenny was answering questions about the work of his department before a Dáil sub-committee.
Labour TD Kevin Humphreys said there was "real concern" among the public about the contents of the tapes.
He asked if the tribunal could be asked to advise if there was information on the tapes that had not been made available to it.
Mr Kenny said he understood gardaí were investigating the matter and he could not comment on that.
He also said if someone had more information relevant to the tribunal, they should bring it to the authorities, and do so quickly.