Update 11.55am: The person trapped in one of the vehicles has now been freed and is being transported to hospital by Ambulance Victoria paramedics.
11.50am: Several FRV crews are responding to a significant car crash on the Western Freeway, in Derrimut.
Crews arrived at the scene shortly before 11am to find that six vehicles had collided.
One person is trapped in a vehicle and firefighters are working together to free them.
Victoria Police has closed parts of the freeway, which will remain closed for several hours as emergency services respond to this incident.
Ambulance Victoria paramedics also attended the scene.
Reviewed 22 February 2022