Police are appealing for witnesses to a potential road rage incident in Truro.
The incident was reported to have taken place at 7.30pm on Monday on the A390 at Threemilestone.
The victim, a man in his 60s, was assaulted to the back of the head with a bottle.
He was treated at hospital for what was described as a "visible" injury.
The suspect was believed to have been a passenger in a white VW Transporter Van.
He is described as a white male, around 5ft 11ins tall and of skinny build with dark hair.
Anyone who witnessed the incident and anyone with information is asked to call 101 and quote CR/073065/19.
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