A teenage boy has been arrested and a further seven teens have fled from a stolen car following a collision on the Monash Freeway this morning.
The stolen white Mazda 3 was spotted by members of the public driving erratically inbound on the freeway in Berwick about 10.15am.
The Mazda then collided into a Mercedes SUV, causing it to flip onto its roof just east of the South Gippsland Highway about 10.25am.
Up to eight teenage boys were seen fleeing the Mazda before a member of the public caught and held down the teenage driver until police arrived.
The 15-year-old boy will be interviewed by police.
The remaining seven teens fled into nearby bushland and Air Wing were called to assist with their search.
They are yet to be located.
The female driver and sole occupant of the Mercedes sustained non-life-threatening injuries and was conveyed to hospital.
The Mazda was stolen from a car park in Noble Park on 30 December.
While police were responding to the Endeavour Hills incident, officers observed a Nissan Navara stationary in the emergency lane on the Monash Freeway, Hallam.
As officers attempted to intercept the Nissan, the driver and passenger fled inbound in the vehicle.
A short time later, the Nissan collided into six vehicles on the freeway at the Belgrave Hallam Road off-ramp before the driver and his passenger fled on foot.
Police were not in pursuit of the vehicle at the time of the incident.
Officers are not aware of any injuries as a result of this incident.
No arrests have been made and police do not believe the two incidents are related.
The Nissan was stolen from a car park at the Cranbourne Railway Station on 20 January.
Anyone with information or dashcam/CCTV footage in relation to either incident is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au