Sussex police investigate robbery and assault
It's reported a teenager was threatened with a firearm during the incident.
A 16-year-old boy was with his friend at Monks Recreation Ground in Lancing on 26 October when he was approached by three males.
One of them, reportedly carrying a gun, demanded property from the victim which was subsequently taken. The boy was then assaulted by the group.
Following enquiries, officers had arrested a 16-year-old boy from Shoreham on suspicion of robbery. He has been released on conditional bail.
Anyone with information can contact Sussex Police on 101, quoting reference 47220200443.