Two people have died and five have been injured in a car crash in Victoria's northwest.
Police said seven people were in a car that lost control and crashed on the Murchison Violet Town Road, near Violet Town, about 2pm (AEDT) on Monday.
A 30-year-old man has been flown to The Alfred hospital in a critical condition, an Ambulance Victoria spokeswoman said.
Four other males were taken to Shepparton hospital, one in serious condition, she said.
It follows the deaths of three people, including a pedestrian, hit by an allegedly speeding car in Melbourne on Sunday night.
Police say a 45-year-old man was crossing Dandenong Road in Oakleigh on a green light with his wife when he was fatally hit by a white Kia hatchback about 11.40pm (AEDT).
He died at the scene.
The hatchback then collided with a silver Ford sedan, killing husband and wife passengers and leaving the car's driver in critical condition.
Police say the hatchback was travelling well over the 80km/h speed limit.
The 29-year-old male driver of the hatchback was under police guard at the Royal Melbourne Hospital overnight with serious injuries, fractures and bruising.
"At this stage, certainly we are investigating criminal offences involved in this incident," Detective Senior Sergeant Gerard Clanchy told Fairfax Radio on Monday.
"Speed is one of the factors.
"We have had a witness come forward to indicate that prior to this collision they were overtaken by the Kia and saw it go through an intersection further back."
Det Sen Sgt Clanchy said the pedestrian had a green light when he crossed the road.
"Tragically, the pedestrian was crossing with his wife, so she's witnessed her husband getting struck by the car," he said.
The latest fatalities take Victoria's road toll to 10, compared with four for the same time last year.