Police are appealing for information after a 21-year-old was punched in the head while on a night out in Bridlington.
The man became involved in a verbal dispute on Tennyson Avenue at 4.45am on Sunday (December 27) before the alleged attack took place and he was punched in the head.
A police spokesman said: "Officers investigating the incident are asking that the driver of a white van which was seen to stop at the scene to contact them.
"Anyone else who witnessed the incident or has any information that could help the police should contact Humberside Police on the non-emergency number 101, quoting crime reference 2159963.
"Alternatively call Crimestoppers anonymously on 0800 555 111."