Three men reportedly attacked a man in Grimsby before stealing his jumper, trousers and trainers on a cold winter night.
Humberside Police said the assault happened at around 8pm on Tuesday, December 3 on Boulevard Avenue.
The victim was taken to hospital with abdominal injuries after the alleged assault and robbery.
It was reported that the three men approached the victim from behind, kicked and punched him to the floor.
Anyone with information has been urged to call 101 and quote log 526 of December 3.