Police were called to a Byford residence last night around 10:00pm, in relation to several shots being fired.
A group of people were outside a residence on Plaistowe Boulevard when it is believed a vehicle drove past them.
There were reports that an occupant of the vehicle fired a weapon several times, with a projectile striking a 19 year old man in the leg.
Police attended the scene and the injured man was taken to hospital. His injuries are not life-threatening.
Local police and officers from the Gang Crime Squad are investigating the circumstances surrounding the incident.
Anyone with information regarding this incident, or who saw or heard anything suspicious in the Plaistowe Boulevard and surrounding area between 9:00pm and midnight are asked to call Crime Stoppers on 1800 333 000 or report the information online at www.crimestopperswa.com.au. Callers can remain anonymous.