A man who was attacked in Belfast city centre remains in a critical condition in hospital.
The scene of the assault near Dunbar Link
The 23-year-old suffered serious head injuries during the attack which happened early on Sunday morning.
The man was assaulted in the Dunbar Link area/Gordon Street area between 0130 and 0230 BST.
Police are questioning three men in connection with the attack. They have also appealed to witnesses to come forward.