Police are investigating the circumstances surrounding a fatal crash which occurred in Pyalong last night.
It is believed a vehicle was travelling east along West Road about 7.20pm when it failed to navigate a bend in the road.
Officers believe the vehicle hit a large dirt embankment before crashing into a tree, forcing the car to roll several times.
The yet-to-formally be identified driver died at the scene.
The passenger was airlifted to hospital with life-threatening injuries.
The exact circumstances surrounding the crash are yet to be determined and investigations remain ongoing.
Anyone who witnessed the collision, with dashcam footage or information is urged to contact Crime Stoppers on 1800 333 000 or crimestoppersvic.com.au.