Police were called to Old Geelong Road, Hoppers Crossing, Wednesday evening (10 March) at about 9 pm after reports an allegedly stolen motorcycle had crashed.
On arrival, the male rider was being treated by ambulance crews with assistance from Fire Rescue Victoria and CFA.
The man was taken to hospital with serious injuries followed by a police escort vehicle.
Police are working to establish the circumstances surrounding the incident.
Anyone who witnessed the crash or with information is urged to contact Crime Stoppers on 1800 333 000.
