It follows an incident on Wednesday 12 February 2025 between 5pm and 5.10pm when a man in his 20s received GBH-level injuries in Haymarket, Norwich.
The victim had been collecting food from a fast food restaurant when he was approached by a male who spoke to him and indicated he wanted to continue the conversation outside.
He subsequently punched the victim, causing a serious injury to his jaw which required surgery.
The man officers would like to speak to is described as black, in his late 30s/early 40s, with a patchy beard.