Police and St John Ambulance officers were called to a house in Nollamara this morning after a 22-year-old man was shot.
The injury, to his right arm, is not considered life threatening and he has been taken to Sir Charles Gairdner Hospital for treatment.
The attack occured about 7am on Monday and police have received information that suggests an old, white Ford Falcon with tinted windows was seen driving past the residence about the same time. There were four passengers in the car.
Anyone with information is asked to contact Crime Stoppers on 1800 333 ooo.