Mandurah Detectives are investigating a wounding offence in the carpark of the Secret Harbour shopping centre, near Subway.
The altercation occurred on Saturday afternoon, September 7 between the victim and a younger male, who was seated in the driver's seat of a black Holden Commodore.
During the incident, the victim sustained a cut to his right hand that required medical attention.
Mandurah District - WA Police Force took to Facebook asking for any witnesses to come forward - specifically a male person who intervened and assisted the victim.
If you have any information relating to this offence, please call Mandurah Detectives on 9531 8888 or Crime Stoppers on 1800 333 000 and quote report number 070919 1425 11494.