 This led to the Irish government setting up the Smithwick Tribunal, a judicial inquiry into the killings which opened in Dublin in June 2011 and published its final report in December 2013.In the Judge Peter Smithwick report he was unable to find direct evidence of collusion but said ‘on balance of probability’, somebody inside the Dundalk Garda station had passed on information to the IRA regarding the presence of Breen and Buchanan.On the afternoon of Monday 20 March 1989, Chief Superintendent Harry Breen (51) and Superintendent Bob Buchanan (55), both high-ranking officers in the Royal Ulster Constabulary (RUC), were returning from an informal security conference with senior officers of equivalent ranks of the Garda Síochána in Dundalk, County Louth, Republic of Ireland.