Police and emergency services are currently on scene on the Western Ring Road between Sydney Road and Craigieburn bypass following a truck rollover that occurred just after 5.30a, Victoria Police saym
A truck lost its load spilling a large amount of fish oil on to the road.
The truck driver, a 24-year-old man Point Cook man, and the driver of a second vehicle involved in the collision, a 56-year-old Brooklyn man, have both been taken to hospital with minor injuries.
East bound has been closed to all traffic while crews clean up the scene.
The exact cause of the collision is currently being investigated.
Anyone with dash cam footage or information regarding the collision is urged to contact Crime Stoppers.