Police have arrested another two people in connection with the murder of 19-year-old Mr Peter McNally, who was shot dead in Craigavon, Co Armagh on Monday.
A 47-year-old man and a 27-year-old man, arrested on Monday, were still being held last night.
Mr McNally, who had no fixed address, may have been the victim of a dispute between criminals, police said.
It is understood he was on the run from Hydebank Young Offenders' Centre in Belfast.
READ MORE
A woman who was in the house at the time of Mr McNally's murder, and was pistol-whipped by his killers, was found dead in the same house yesterday morning.
Police said they did not suspect a crime and were not seeking anyone in connection with the death of Ms Georgina Gibson (33).