Tanaiste Joan Burton should have "stood up and spoken" out over the damaging findings contained in the Fennelly Commission report, Social Democrat TD Roisin Shortall has said.
Ms Shortall launched a scathing attack on Ms Burton and her former party.
The Dublin North West TD said it is clear from the findings of Mr Justice Nial Fennelly that the decision to dispatch former Secretary General of the Department of Justice Brian Purcell to the home of former Garda Commissioner was akin to him being sacked.
Mr Callinan himself is coming under pressure to shed light on the findings in the report that bags of his private papers were shredded and a mobile SIM card 'disappeared'.
The issue of the Fennelly Commission findings is continuing to dominate political events.
At an event in Dublin yesterday, the newly-formed Social Democrats raised concern over the report.
Ms Shortall rounded on Tanaiste and Labour Party leader Ms Burton over her response to the report.
"There are endless occasions when the Labour Party should have stood up," she said when asked if she believed Ms Burton should have pulled the plug on the Coalition.
"A lot of people are disappointed with the Labour Party's failure to speak out when necessary.
"The Fennelly Report is one of those occasions - there are serious questions to be answered."
Ms Shortall made the remarks at the announcement of five new candidates by the Social Democrats in Dublin yesterday.
The most high-profile of these is Limerick senator James Heffernan, who quit Labour over what he described as "broken promises".
Other candidates announced were Dublin city councillor Gary Gannon, Sarah Jane Hennelly (Limerick city), Niall O Tuathail (Galway West/South Mayo) and Anne Marie McNally (Dublin Mid-West).