A man was left with a black eye and suspected fracture of the face after being attacked in Northampton.
The attack happened last weekend.
A Northamptonshire Police spokesman said: “Police are appealing for information after an assault occurred sometime between midnight and 3.30am on Sunday, March 31, in the Dallington Brook area of Northampton.
“The victim, a 33-year-old man, was walking through the area when he was approached and punched to the face.
“The victim sustained a black eye and a suspected fracture to his face.”