Humberside Police are appealing for witnesses after a 38-year-old man was assaulted on Holderness Road, Hull at around 5.30pm on Thursday 9 November.
The man was walking along Holderness Road when he was approached from behind by another man who assaulted him.
Ambulance attended and the victim was taken to hospital for treatment to a minor head injury.
Anyone that witnessed the incident is asked to call 101 quoting log 427 of 09/11/17 or Crimestoppers anonymously on 0800 555 111.