A man was hit in the face with a glass and suffered a fractured leg after being attacked in a Rushden car park.
Police are appealing for witnesses to the assault in the Windmill Club car park, Windmill Road, Rushden.
The victim, a 28-year-old man, was hit in the face with a glass by one offender and then assaulted by another.
The second attacker is believed to have been the driver of a black car which arrived in the car park shortly before the assault.
The violent attack happened between 1am and 1.30am on Sunday, 20 October.
A police spokesman said: “The victim sustained injuries to his face and a fractured leg and was treated at Kettering General Hospital.”
One of the offenders is a white man, in his thirties, with a muscular build. He wore a dark vest top.
A 21-year-old man was arrested in connection with the incident and has been released on police bail pending further enquiries.
Witnesses to this incident, or anyone with information about it, can call Northamptonshire Police on 101 or information can be given anonymously to Crimestoppers on 0800 555111.