Thanks to Mark Tighe at the Sunday Times (Ireland) here is a copy of the Garda report into the Phoenix Parks concerts in July 2012. It was obtained under the Freedom of Information Act 1997/2003 following an appeal to the Office of the Information Commissioner. The report came about because of a controversy surrounding policing at the events.
His story on the report can be read on the Sunday Times website here (€)
This is the Information Commissioner’s decision in relation to the case.