There's a witness appeal after a teenage boy was assaulted outside the Royal Mail sorting office in Hurst Road, Horsham at around 1.45pm last Monday (May 2).
Police say the victim and two teenage girls were followed through the town centre by four teenage boys.
When they reached Hurst Road, they apparently pushed the victim and told him to hand his belongings over.
The victim refused and was punched in the head three times.
Any witnesses to the assault or anyone with video footage of the incident which could help officers with their investigation is asked to report it to police online or call 101 quoting serial number 708 of 02/05.