Police are appealing for public assistance as they investigate the circumstances surrounding an incident where a teenager was struck by a vehicle in St Kilda last night.
A grey Kia pulled into the carpark of a fast-food restaurant on The Esplanade just after 10pm.
It is understood a stolen white Mazda followed the Kia and crashed into the back of it near the drive thru.
Officers were told one of the male occupants then got out of the Mazda and started banging on Kia, before the passenger, a 17-year-old boy, was slashed.
The Kia left the carpark and was followed by the Mazda towards Ackland Street, then down St Leonards Avenue where it reached a dead end.
The two male occupants got out of the Kia and attempted to leave on foot.
The group in the Mazda dumped the vehicle, then got into the Kia and fled.
A short time later, the 17-year-old boy from the Prahran area was located with serious injuries on St Leonards Avenue.
Police believe the teen was deliberately struck by the Kia. He was transported to hospital with non-life-threatening injuries.
The Kia was abandoned nearby on Fitzroy Street.
Police were told two male occupants of African appearance fled on foot towards Beaconsfield Parade.
Uniform officers, the Critical Incident Response Team, Dog Squad and Public Order Response Team members searched the area with assistance from the Air Wing.
No arrests have been made at this stage.
Detectives are appealing for witnesses of the incidents, or anyone who saw the two vehicles in the St Kilda area just before 10pm to come forward with information.
Investigations are ongoing into the circumstances of the incidents and whether the parties are known to each other.
Anyone who witnessed the incidents, has vision or information is urged to contact Crime Stoppers on 1800 333 000 or www.crimestoppersvic.com.au