Senior garda managers were slow to brief Callinan
The Fennnelly Commission report finds that then-Garda Commissioner Martin Callinan did not have full information on the garda station phone-call recording crisis for several months before he stood down.
The findings show Mr Callinan was not adequately informed by his management team on crucial details of the phone tapping.
The current Garda Commissioner, Nóirín O'Sullivan, was then-deputy commissioner, and one of the senior officers in possession of many of the details for several months before Mr Callinan was fully briefed.
The problem first came to light in autumn 2013. But the Commissioner was not in possession of the full facts until shortly before standing down from his post in March 2014.
The Fennelly Commission concludes: "The Commissioner was not adequately informed by his management team regarding the details of the telephone recording issue."
While there were two deputy commissioner posts at the time, one was vacant. This meant Ms O'Sullivan was the only deputy and was among those who first confronted the issue in October 2013 and tried to establish the extent of the problem.
On October 17, 2013, Ms O'Sullivan was contacted by Chief Superintendent Tom Hayes in Cork who relayed problems with recordings relating to the investigation of Ian Bailey in connection with the murder of Sophie Toscan du Plantier.
As matters advanced, it emerged that Ms O'Sullivan and another official each thought it was the role of the other to inform Commissioner Callinan. The other official was a civilian head of administration of equal rank to Ms O'Sullivan.