A man has died in a horror crash in Coolup.
Police say the 28-year-old man was driving a black Holden Commodore wagon north on the South Western Highway around 9.40pm on Friday when it left the road and collided with a tree near Tallathalla Road.
The Waroona man died at the scene.
Three other passengers were injured and received medical treatment.
Major Crash investigators are seeking witnesses who may have seen the black Holden Commodore prior to the crash or may have been travelling along South Western Highway between Pinjarra and Waroona at the time and may have dash cam footage to call Crime Stoppers on 1800 333 000 or online at crimestopperswa.com.au.