A man received serious head injuries in an attack in Mandurah overnight.
Police are investigating the incident that occurred near the Old Mandurah Bridge on Pinjarra Road.
About 11pm a 32-year-old man was attacked after he left a nearby tavern.
It is believed the victim was hit in the head with some kind of pole or stake.
He was taken to the Peel Health Campus for treatment.
Anyone with information regarding this incident is asked to contact Crime Stoppers on 1800 333 000.