A man fled a robbery bare-chested after offenders tore his t-shirt in Albert Road on Saturday.
The incident happened at about 7pm when a group of men pushed the 20-year-old against a fence, punched him in the face and ripped his t-shirt.
The offenders are described as a group of white and black men, all approximately 20 years old.
One wore a grey hooded jacket, tracksuit bottoms and white training shoes.
Call Beds Police on 101 with information.