Police at Strand Road in Derry are appealing for information about an assault on a man in the city centre.
Constable Bell, the investigating officer, said the incident occurred between 12.45am and 1.15am on Sunday, February 8, outside a nightclub at Bank Place.
A man in his 20s was taken to hospital with a head injury and a 27-year-old man was arrested at the scene on suspicion of causing GBH. He was later bailed pending further enquiries.
Information can be given on the police non-emergency number, 101, or by calling the Crimestoppers Charity anonymously on 0800 555 111.