A 13-year-old boy remains in custody in the North today as police continue to investigate the murder of a Polish man .
The teenager is one of three people being detained by officers investigating the killing of Marek Muszynski (40) in Newry on Tuesday.
Detectives are also still questioning a 21-year-old woman arrested in London yesterday and an 18-year-old man arrested in Newry.
The woman was flown back to Northern Ireland for questioning.
A 20-year-old female arrested in Newry yesterdayday has been released on bail pending further inquiries, as has a 19-year-old woman arrested in the town on July 7th.
Mr Muszynski, who lived in Newry, was found beaten to death in the city centre.
Police have not released the nationality of those arrested or said whether they are treating the killing as a race crime. A motive is still being established.
The body of Mr Muszynski, from Sandys Street, Newry, was discovered off Upper Edward Street in the lane behind the city swimming pool just before 1am on Tuesday.
Detectives have appealed for anyone with information or who witnessed suspicious activity to contact them.
PA