An 18-year-old man has died and two others seriously injured after a crash in Collie.
A Holden Colorado utility with four male occupants, all from Collie, was travelling south along Mungalup Road just after midnight on Friday when it left the road and collided with a tree.
One rear passenger, an 18-year-old man, died at the scene.
A second rear passenger, a 19-year-old man, received serious injuries and was airlifted by the RAC rescue helicopter to Royal Perth Hospital.
A 20-year-old man, who was a front passenger in the vehicle, was taken by ambulance to Collie Hospital with serious injuries.
The 19-year-old driver was not injured in the crash.
Police would like to speak to anyone who may have seen the crash or the Holden Colorado prior to the crash.
Anyone with any information is asked to call Crime Stoppers on 1800 333 000 or make a report online at www.crimestopperswa.com.au.
Long-term Pinjarra resident gifts Shire heritage railway carriages, brake vans
Extent of damage to Bar Therapy following devastating fire revealed
MARC pool reopening date announced after three year closure
Yunderup Island blaze under control
Mandurah's Bar Therapy damaged by fire
Postman injured in Wannanup crash
Man charged after allegedly stealing service medals from Greenfields storage unit
South West resort receptionist charged with 32 fraud offences
Daughter of Port Kennedy hit-and-run victim pleads for offenders to hand themselves in