Police are appealing for witnesses to a serious assault in Foundry Retail Park, Foundry Lane, Horsham, around 7.05pm on Tuesday (June 7).
Officers responded to a report of a potential stabbing, however, it later transpired to be a serious assault.
The victim, a 24-year-old man, was found with a head injury after being hit across the head with a metal instrument.
He was taken to hospital with serious but non-life threatening or non-life changing injuries and has since been discharged from hospital.
Officers are particularly keen to speak with a group of three men, one of which had a grey bike, at the time of the attack.
Anyone who witnessed the assault or has information which could help officers with their enquiries is asked to report it to police online or call 101 quoting serial number 1174 of 07/06.