Two dead in collision with police car

Two people have died after their motorbike and a police car crashed in Victoria.

The rider and pillion passenger both died at the scene after the collision on the Great Alpine Road at Esnay near Bairnsdale about midday on Saturday.

They have not been identified.

The male officer, who was the sole occupant of the police car, was not injured.

The deaths follow those of two men in separate accidents on Saturday morning.

A man in his 20s was thrown from a car as it crashed through a fence at Cranbourne South about 4.20am.

Police believe another man, also aged in his 20s, was walking on the Hume Freeway at Wandong when stuck and killed by a truck just after 4am.