Five dead following four major collisions on South West Victorian roads in 11 days

A police car at the scene of a fatal crash at Stoneleigh in western Victoria.

Emergency responders have been offered support after a triple-fatal in Stoneleigh last week. (ABC News: Eden Hynninen)

In short:

Five people have died following four major collisions on South West Victorian roads in the past two weeks. 

A man who has yet to be formally identified died this morning following a collision in Parwan, near Bacchus Marsh, on Friday morning.

What next?

Authorities are investigating all four of the incidents.