Police are investigating after a truck rolled over on the Princes Freeway south-west of Melbourne this afternoon.
Police say the truck rolled after a bus and a car collided at Point Cook at about 1pm.
Two people, including the truck driver, were taken to the Royal Melbourne Hospital in a stable condition.
Ambulance Victoria said it had assessed three people on the scene, one of whom did not require emergency treatment or transport.
Transport Victoria said an excavator was removing sand from the road.
Police are working to establish the exact circumstances of the incident.