Independent TD Mick Wallace today accused the Government of appointing the previous Garda Commissioner's "right-hand woman" to head up the force.
Mr Wallace told the Dail the appointment was "an insult" after two years of garda scandals to appoint deputy commissioner, Noirin O'Sullivan, to the top job.
The Wexford TD said she sat at the right hand of former Commissioner Callinan at an Oireachtas committee meeting when he said he was "disgusted" by garda whistleblowers.
"She was whispering in his ear," Mr Wallace said.
But the Taoiseach Enda Kenny strongly rejected Mr Wallace's allegations.
Mr Kenny said Commissioner O'Sullivan was appointed after an independent selection process which included people from outside of Ireland.
The Taoiseach said the new Commissioner was dedicated to fundamental reform of An Garda Siochana and plans for this, including important law changes, were now well advanced.