Update: Sinn Féin and Brendan Howlin urge Garda Commissioner to step aside

Update 8pm: Sinn Féin's Jonathan O’Brien has also called for Garda Commissioner, Noirín O'Sullivan, to step aside.

The party's Justice Spokesperson has urged the Garda Commissioner to step aside "without prejudice" during the course of the Commission of Investigation into whistleblower allegations.