Police are now calling for witnesses who could hold vital information following a deadly car crash.
Major Crash Officers are asking witnesses to come forward who might have seen or been in the area prior to a fatal crash in the state's south west on Tuesday morning.
Authorities said a 20-year-old died after his car collided with a tree on Brookhampton Road at the Lyons Road intersection in Brookhampton, 45 kilometres south east of Bunbury.
READ MORE: ONE DEAD IN SOUTH WEST CRASH
Investigators are now asking anyone who may have seen the car in the area prior to the crash to call Crime Stoppers on 1800 333 000 or to make a report online at crimestopperswa.com.au