An allegedly stolen car, packed with eight teenagers, hit a Mercedes SUV causing it to flip on Melbourne's Monash Freeway.
One teenage boy was arrested after the collision this morning.
The allegedly stolen white Mazda 3 was seen driving erratically inbound on the freeway in Berwick about 10.15am, police said.
READ MORE: Police looking for car as search for alleged NSW gunman widens
The Mazda collided into a Mercedes SUV, causing it to flip onto its roof 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 15-year-old driver until police arrived.
The remaining seven teens fled into nearby bushland and despite Air Wing being called were not found.
The female driver who was the only one in the Mercedes sustained non-life-threatening injuries and was rushed to Dandenong Hospital.
Ambulance Victoria said she was stable.
READ MORE: Former Olympic snowboarder on FBI's most-wanted list is arrested in Mexico
The Mazda was stolen from a car park in Noble Park on December 30.
In an unrelated crash on the same highway, officers saw a Nissan Navara stopped in the emergency lane.
As officers tried to intercept, it took off.
It then hit six vehicles on the freeway at the Belgrave Hallam Road off-ramp.
READ MORE: Brutal heat as temperatures near 50 degrees
The driver and his passenger fled on foot.
The Nissan was stolen from a car park at the Cranbourne Railway Station on January 20.
Police are appealing for witnesses and dashcam.
DOWNLOAD THE 9NEWS APP: Stay across all the latest in breaking news, sport, politics and the weather via our news app and get notifications sent straight to your smartphone. Available on the Apple App Store and Google Play.