A man was taken to hospital after sustaining injuries to his face in a club in Kettering.
Police are appealing for witnesses following the possible assault in Remi’s nightclub in Dalkeith Place in the town centre.
The incident took place between 12.45am and 1.05am on Sunday, November 2, when a man was seen falling to the floor inside the club.
A police spokesman said: “He had facial injuries and was taken to Kettering General Hospital for treatment.
“Officers would like to speak to anyone who was at Remi’s around the time of the incident and who may have seen how the man sustained his injuries.”
Witnesses, or anyone with information about the incident, is asked to call Northamptonshire Police on 101 or Crimestoppers on 0800 555111.