Two people, one with life-threatening injuries, has been taken to hospital following a head-on collision at Sunbury.
Police believe a black Holden utility was travelling east along Dalrymple Road when it collided with a blue Mazda station wagon travelling west along Dalrymple Road about 5pm on Monday.
The driver of the Mazda, a Sunbury woman believed to be in her 20s, was airlifted to hospital with life-threatening injuries.
The driver of the Honda, a 31-year-old Diggers Rest man, was transported to hospital with minor injuries.
Investigators urge anyone who may have witnessed the collision or who may have information to contact Crime Stoppers on 1800 333 000 or submit a confidential report at www.crimestoppersvic.com.au