Five men were allegedly involved in the affray, which took place on the South Esplanade just outside Mojitos – the bar which opened last year in the former Laska’s site.
It happened on Saturday night, 22 February, around 21:40.
Police said anyone who saw what happened or knows one of the people involved should get in touch with Helen Devonshire in the Investigation Support Unit on 725111, or speak to the on duty sergeant.
Crimestoppers can also be contacted anonymously on 0800 555 111.
Pictured top: The South Esplanade.
