A man had a gold chain stolen from around his neck while he was at a music festival near Corby.
The man was at the Summer Gathering music festival at Rockingham Castle on Friday, July 24, when he was punched by a stranger at about 8pm.
Following the assault, the man realised the chain from around his neck had gone missing.
Witnesses, or anyone who knows anything about this incident, can call Northamptonshire Police on 101.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111.