A man is in critical condition in hospital this morning after he was found unconscious in Belfast city centre yesterday evening.
He was found shortly before 6 p.m. in a park near the junction of Victoria Street and High Street. Police arrested one man who remains in custody today.
A police spokesman said it was unclear what type of injuries the man sustained.
Police have appealed for witnesses to help with the inquiry. At the time of the discovery the area was busy with rush-hour commuters.