Major Collision Investigation Unit detectives are investigating a hit and run collision that has left a man in a critical condition.
Police located a scooter rider unresponsive at the intersection of Healesville-Koo Wee Rup and Ballarto roads in Pakenham South just before 7pm.
It is believed the scooter was travelling south on Koo Wee Rup Road when a vehicle (B) overtook the scooter and another car (A).
At the same time car B was overtaking, car A attempted to overtake the scooter but swerved back in and struck the back of the scooter causing it to crash.
Both cars, which police do not have descriptions for at this stage, continued on after the collision and police are keen to speak to occupants of both vehicles.
The yet to be identified male scooter rider was airlifted to hospital in a critical condition.
Police are appealing for anyone who witnessed the collision, or anyone with dashcam footage contact Crime Stoppers on 1800 333 000 or submit a confidential crime report at www.crimestoppersvic.com.au
