Mandurah Detectives are investigating an incident that occurred in Madora Bay on Sunday 18 January 2026.
About 12.10am, emergency services received a report a man had been assaulted on Britawast Road, near Addingham Road.
Police and St John WA attended the scene and located a man in his 30s with a serious laceration type wound to the neck area.
The man was conveyed by ambulance to Fiona Stanley Hospital for medical treatment.
Detectives urge anyone with any information relating to this incident, to make a report to Crime Stoppers online at www.crimestopperswa.com.au or by calling 1800 333 000.
Reports to Crime Stoppers can remain anonymous.