Mr Justice  Peter Smithwick arriving at the Tribunal. Photograph: Matt Kavanagh/The Irish Times.

20 March 1989: RUC chief supt Harry Breen and supt Bob Buchanan are shot dead in an IRA ambush near Jonesborough, south Armagh. The officers were retu(...)

A  Northern security service intelligence report suggested well-known republican Patrick "Mooch" Blair, seen here leaving the Smithwick Tribunal in November 2011,  had claimed there was a Garda spy involved in the murders of  RUC officers. Photograph: Dara Mac Dónaill/The Irish  Times

One of the State's most senior Garda officers has responded to Northern security service intelligence which points to allegations of Garda/ IRA(...)