An Ulster Unionist peer has alleged in the House of Lords that senior south Armagh republicans were responsible for the murder of Paul Quinn.
Paul Quinn's family said the IRA killed the 21-year-old
Using parliamentary privilege, Lord Laird claimed Mr Quinn had been killed as a result of a dispute with the son of a senior republican from the area.
He alleged that IRA or former IRA members were involved in his death.
Paul Quinn, 21, died after being assaulted by nine men in Castleblaney, County Monaghan last month.
No-one has been charged in connection with his death.
Shortly after the murder, Deputy First Minister Martin McGuinness said he was confident that IRA members had not been involved.