Devon and Cornwall Police are appealing for information about the assault of a young man in Truro on Saturday morning.
The 22 year-old man was walking home between midnight and 1.30am after a night out with friends in Truro.
He was approached and assaulted near Kenwyn Mews by persons who he thinks got out of a vehicle.
The victim sustained a minor injury to his head as a result of the attack.
His Samsung Galaxy S3 mobile phone and wallet containing cards and a small amount of money were also stolen.
The victim is unsure exactly what had occurred and police are trying to piece together his movements.
Anyone with information about the incident should call the police on 101, quoting the crime number GT/13/2477.