A 50-year-old Ellenbrook man has died as a result of life threatening injuries he received when his truck collided with a tree near Dalwallinu on Friday.
Major crash investigators are investigating the crash in Maimoon that took place around 1pm on Friday.
The man was driving a white cab-over Kenworth truck, towing two semi-trailers east on Gunyidi-Wubin Road when it left the carriageway near Pearse Road, and collided with a tree.
He died at the scene.
Anyone who saw the crash or the truck in the area prior to the crash is asked to call Crime Stoppers on 1800 333 000.