Police in the North have released two men arrested yesterday as part of the ongoing investigation into the murder of Paul Quinn last year.
The 21-year-old, from Cullyhanna in south Armagh, was beaten to death by a gang of men after being lured to a remote farmhouse in Co Monaghan in October 2007.
Sinn Féin has denied his family's claims that members of the IRA were responsible for the killing.
Despite numerous arrests on both sides of the border, nobody has ever been charged with the murder.