Police in Lisburn arrested three men in the town last night as part of an investigation into the murder last month Catholic James McMahon (21).
Loyalist paramilitaries were suspected of bludgeoning Mr McMahon to death after he was beaten with bats by a gang close to the Lagan River in Lisburn, Co Antrim.
The victim and two friends were chased by three masked men as they walked home after a night out in the city.