Police are concerned for the welfare of a teenage boy who was seen being assaulted by a group of nine teenagers in Linden Park, Littlehampton, on Monday 13 June between 6.10pm and 6.20pm.
The boy then ran off down an alleyway and turned on to Gloucester Road, out of sight of witnesses.
If this was you, or if you have any information relating to this incident, report online or call 101 quoting serial number 155 of 15/06.