A driver has died in a freak accident on a major freeway in Melbournes northwest.
A white truck was driving towards Altona on the M80 Ring Road at about 4pm when an object fell off the back.
The object then travelled across the freeway and hit a car travelling towards Greensborough.
The driver of the car was declared dead at the scene and is yet to be identified.
The truck driver didnt stop following the incident and was last seen travelling towards Altona.
It was not known if the driver was aware that the incident had occurred.
An object fell off the back of a truck before colliding with another car. Picture: 7 NEWS.
The driver was declared dead at the scene. Picture: 7 NEWS.
Police are looking to speak with the driver and has urged anyone with information or dashcam footage to come forward.
All Greensborough-bound lanes were closed between Ballarat Road and Sunshine Avenue following the collision.