Petrol tanker rollover in horrific Calder Freeway crash
The scene of the smash can be seen above (content warning).
UPDATE: TOLL has issued a statement saying they were "deeply saddened" after an horrific crash fatal crash involved one of their trucks this morning.
"Toll is deeply saddened to learn of the fatality and serious injuries following an incident on the Calder Freeway involving a Toll fuel tanker at around 8am this morning," a spokesperson has said.
"Our priority right now is to offer every support to the people impacted and their families and to continue to assist authorities with investigating the incident.
"The Toll driver involved in the incident has been taken to hospital and remains in a stable condition."
Police are investigating after at least one person was killed in the collision in Keilor Park this morning.
Emergency services were called to the Calder Fwy, near Milleara Rd, about 8.05am after the Toll petrol tanker travelling outbound collided with a number of vehicles.
It's believed the truck was in the centre lane on the freeway when a car has pulled in front of it, causing the truck to swerve and the driver to lose control of the vehicle.
The truck has then struck a number of other cars.
One car was crushed under the truck during the incident and investigators are still in the process of determining how many people were in that vehicle, however at least one person has been confirmed deceased.
Six others were transported to hospital with injuries including the truck driver.
The exact circumstances surrounding the collision are yet to be determined and detectives from the Major Collision Investigation Unit are investigating.
Due to a significant amount of fuel still in the truck and on the road, police will need to wait for MFB crews to clear the scene before they can use equipment to cut into the crushed vehicle and further investigate.
At this time it is expected to take until at least 3pm.
The road is also expected to be closed for several hours, including through afternoon peak, and motorists are advised to seek alternative routes.
Anyone who witnessed the collision is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential crime report to www.crimestoppersvic.com.au
EARLIER: The Calder Freeway has been closed following a horrific accident shortly after 8am involving a petrol tanker and up to ten cars.
The accident took place near the Milleara Road exit where the truck collided with the cars before rolling.
The truck has reportedly crushed at least one car and it is not yet known how many people are trapped in the vehicle.
According to a News.com.au report Ambulance Victoria has confirmed six people have been injured but are in a stable condition.
One has been taken to Royal Melbourne Hospital, two others are being taken to Western Hospital Sunshine, and another is being taken to Western Hospital Footscray.
According to reports one person is thought to have been killed but police haven't yet confirmed any deaths.
Motorists are being urged to avoid the area.