Police are treating the death of 55-year-old Richard Gerard Scullion on Monday as murder.
A 28-year-old man is arrested after a man in his 50s was found dead in a house in Banbridge.
The victim has been confirmed to be 27-year-old Gary Bernard Hamilton from Armagh.
The man in his 20s died after an incident on the Castlewellan Road.
A 33-year-old man questioned on suspicion of racially motivated criminal damage is released on bail.