POLICE are investigating after a man knocked on the door of a random house in Aveley last night to get help for a knife wound.
A statement from WA Police said the man knocked on the door of a Millhouse Road home at about 1.30am to get help for a knife wound on his arm.
The man did not know the people living at the house.
Plice believe the man walked from a nearby property on Duvall Parkway where he had been involved in a fight with another man.
He was taken to Joondalup Health Campus by ambulance and then transferred to Sir Charles Gairdner Hospital.
A 27-year-old man is assisting police with their enquiries.