Police are appealing for a man who stopped to help a victim of an assault in Leeds to contact them.
The 35 year old victim had been walking in the direction of York Road after visiting The International Food Store, in Harehills, when he was hit from behind and knocked unconscious.
He was taken to hospital suffering significant facial injuries as a result of the attack.
It happened on Wednesday January 30 between 8.30pm and 9pm on Harehills Lane.
Police are appealing for any witnesses to come forward, in particular a man described as young and Polish, who helped the victim to his feet and may have seen what happened.