A woman in her 50s has died in a crash east of Bunbury.
Police say a blue truck towing two trailers collided head on with the woman's Hyundai Santa Fe on the South Western Highway near the intersection of Wireless Road in Waterloo around 10.25am on Monday.
She died at the scene.
The truck driver received minor injuries.
Anyone who witnessed the crash, has dash-cam footage, or saw either the truck or the Hyundai driving prior to the crash, is asked to call Crime Stopper 1800 333 000 or report online at www.crimestopperswa.com.au.