Minister for Arts, Heritage and the Gaeltacht Heather Humphreys has ignored questions from the media over the the nomination of John McNulty for the Seanad.
She was attending an event at the National Gallery of Ireland.
Yesterday, Taoiseach Enda Kenny said he took full responsibility and the blame for the controversy
Mr Kenny said what happened was of his own making but would never happen again.
He said he regretted his decision and Minister for Arts, Heritage and the Gaeltacht Heather Humphreys was not in any way to blame for what had happened.
Responding to Mr Kenny's comments, Fianna Fáil Leader Micheál Martin said his statement led to "a number of questions, the most obvious of which is, what exactly is he apologising for?
"Is the Taoiseach now admitting that he instructed Minister Heather Humphreys to appoint Mr McNulty in support of his Seanad candidacy?" Mr Martin asked.
"This goes to the heart of the scandal and requires a full statement in Dáil Éireann from the Taoiseach outlining the entire sequence of events from the beginning to the end of this shabby affair."
Mr Martin also called on Mr Kenny to apologise to the board of IMMA and the membership and staff of Seanad Éireann.