A man was left with a broken arm and a badly damaged car following an altercation in the car park of a Northampton pub.
The incident happened outside the Bat and Wickets in Louise Road, close to the Racecourse, at about 3.45pm on Monday.
Three men were involved in the incident and one was left with a broken arm. His black Volkswagen was also damaged.
Officers investigating the case would like to speak to one of the men who was Asian, about 5ft 10in, heavily built and clean shaven with a bald head.
Witnesses, or anyone with any information, can call the police on 101 or Crimestoppers anonymously on 0800 555111.