Garda Commissioner Nóirín O’Sullivan has said she acted as soon as possible in relation to allegations that some officers may have been preparing to give testimony against Sergeant Maurice McCabe at the O’Higgins Commission.

Speaking to RTÉ News, Ms O’Sullivan commented for the first time in public about the report and the controversies surrounding it.

She also said that An Garda Síochána had changed as an organisation over the past two years but still had more work to do when dealing with whistleblowers.

Ms O'Sullivan said it had taken some time to make the case for investment in the force so that gardaí could receive the resources necessary to make changes - such as in training, supervision, incident management and how victims of crime are dealt with.