Police are looking for witnesses after a vulnerable man suffered an unprovoked attack in Thetford town centre.

The victim, in his sixties, was sitting on a bench near St Cuthbert's Church in King Street when a male youth approached him before punching him in the arm.

The man suffered bruising as a result of the attack, which is believed to have taken place in the afternoon or early evening some time between December 28 and January 2.

Anyone who may have witnessed the attack should contact PC Rob Dewhurst at Thetford Police Station on 101.