The lead counsel in the Garda legal strategy challenging the credibility and motivation of Sgt Maurice McCabe at the O’Higgins inquiry in 2015 said he had been “left in no doubt” that information given to his legal team by senior gardaí grounding that strategy was accurate, when a key part of it was “wrong”.

A garda witness has told the Charleton Tribunal that former Commissioner Nóirín O'Sullivan did not contribute to a document which outlined legal instructions to challenge whistleblower Maurice McCabe's motivation.