A 35-year-old Mundaring man has died and another man is recovering in hospital after a car crash overnight.
According to police, at 10.45pm a red Mitsubishi Magna sedan was travelling south on Coolgardie Road when the driver lost control, crossed to the other side of the road and hit a tree.
The 35-year-old male front seat passenger died at the scene.
The 24-year-old male driver, from Mundaring, was taken to Royal Perth Hospital with serious injuries.
Major Crash officers are seeking witnesses who may have seen the vehicle prior to the crash.
Witnesses are asked to contact Crime Stoppers on 1800 333 000.