Police are investigating the circumstances surrounding a fatal collision which occurred in Mulgrave this evening.
Investigators believe a vehicle collided with a truck on the eastbound lanes of the Monash Freeway about 7.40pm.
The occupant of the vehicle, who is yet to be formally identified, died at the scene.
The truck driver, a 42-year-old Longwarry man, sustained minor injuries and was transported to hospital for treatment.
The investigation into the exact cause of the collision remains ongoing.
Anyone who witnessed the collision or with dash-cam footage is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au