Police are appealing for information after a man was assaulted in Crawley High Street.
Officers were called to a disturbance near the Medusa Bar in the early hours of September 11.
A group of people were involved in the incident in which a man was assaulted.
A 31-year-old local man was arrested on suspicion of assault occasioning actual bodily harm and with possession of a class A drug.
He has been released under investigation while enquiries continue.
Police wish to speak to witnesses and with those at the scene to establish the full circumstances.
Anyone with information can report it to Sussex Police online or call 101 and quote serial 148 of 11/09