The scene of the murder at Rooney Park in Kilkeel Police have been given a further 36 hours to question a 28-year-old man arrested over the murder of a Ukrainian man in Kilkeel last Saturday.
Dmytro Grysunov, 29, was shot dead at Rooney Park during a clash between two groups of foreign nationals.
The 28-year-old suspect was arrested on Tuesday. A 32-year-old woman remains in custody in relation to the shooting.
Three men aged 31, 36 and 26 have been released on police bail pending further enquiries.
Police want to question two other men, including Devidas Paliutis who was freed in error from Maghaberry Prison last autumn and has been on the run since.
It is believed a dispute between the two groups started when a house was attacked at Haywood Way at 2100 BST on Saturday.
The trouble then moved to Rooney Park, where at least two shots were fired in the street.
The attackers then fled the scene on foot.
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