Two men have been arrested by police in the North over the murder of Paul Quinn in Co Monaghan over a year ago.
The 21-year-old from Cullyhanna in south Armagh was lured across the Border in October last year and beaten to death in farm buildings near Castleblaney.
Despite numerous arrests on both sides of the Border - several in recent weeks - no one has ever been charged with the murder.
The PSNI said the latest two detainees were being questioned at the Serious Crime Suite in Antrim.