Police are appealing for anyone who witnessed an altercation between two men in Thetford yesterday to come forward.
Two men got into an altercation in the Water Lane area, near the Priory ruins entrance, between 11am and 11.15am.
One of them sustained an injury to his arm but refused treatment.
Officers believe the men are known to each other but would like to hear from anyone who may have been in the area at the time.
Anyone with information is asked to call Detective Sergeant Mark Glister at Thetford CID on 101.