Following a recommendation from the Cory Collusion Inquiry , the Smithwick Tribunal investigated allegations of collusion following the 1989 killing of two Royal Ulster Constabulary officers by the Provisional IRA as they returned from a meeting with the .
The Smithwick Tribunal is also investigating allegations of collusion following the deaths of two Royal Ulster Constabulary officers killed by the Provisional IRA as they returned from a meeting with the Gardaí in the Republic of Ireland following a recommendation from the Cory Collusion Inquiry .