UPDATE: The driver of the truck involved in Saturday's Eyre Highway crash at Coorabie has been arrested.
A truck collided with a tree at Coorabie on Saturday afternoon, killing the 27-year-old passenger of the vehicle.
The driver of the truck was treated for minor injuries at Ceduna Hospital.
Major Crash Investigators attended the scene on Saturday and commenced their investigation into the circumstances of the crash.
Police arrested the driver, a 58-year-old Western Australian man, on Sunday morning and charged him with causing death by dangerous driving.
The man was bailed to attend the Adelaide Magistrates Court on September 18.
Eyre Highway has since reopened.
ORIGINAL: A Western Australian man has died following a fatal Eyre Highway crash at Coorabie on Saturday afternoon.
Police and emergency services were called to the scene just after 1.30pm after a truck collided with a tree.
The passenger, a 27-year-old man, died at the scene, while the 58-year-old driver of the truck was taken to Ceduna Hospital where he was treated for minor injuries.
Eyre Highway remains closed to all traffic, with diversions in place for cars only.
Motorists are asked to follow the directions of emergency services personnel at the scene.
Major Crash Investigators have been at the scene since the afternoon to determine the circumstances surrounding the crash.
Anybody who witnessed the crash is urged to call Crime Stoppers on 1800 333 000 or online at www.crimestopperssa.com.au with any information.
The state's road toll has now risen to 74, compared to 43 at the same time last year.