Two men were stabbed and another was bottled in a serious assault in the car park of a Corby pub.
The incident took place in the car park of the New Inn pub in Tunwell Lane between 1am and 1.30am on Monday (May 2).
During the incident two victims suffered stab wounds and were taken to hospital for treatment.
A third man was hit on the head with a bottle.
The offender was male and is described as having tanned skin.
There were a number of people in the area at the time and officers are appealing for anyone who witnessed the incident or has any information about it to contact Corby CID on 101.
Alternatively, they can call Crimestoppers anonymously on 0800 555111.