About 10.30am the Narrandera man was sitting in his car in carpark while his wife was shopping.

Police will allege he was approached by a man who had been driving a car with a caravan attached.

A verbal exchange took place regarding the caravan blocking traffic.

The man punched the 85-year-old, who was still sitting in his car.

The victim suffered lacerations to the face and arms as a result of the incident.

Victorian police are assiting to identify the male offender.