UPDATE: Police looking for Mercedes in crash that injured seven on the Gardiner

The eastbound lanes of the Gardiner Expressway were closed for about eight hours Tuesday morning following a collision that left several people injured.

Police were called around 12:10 a.m., to the eastbound lanes between Highway 427 and Kipling.

They initially thought there were two vehicles involved but police say, after speaking with witnesses, they now believe there was a third vehicle that left the scene.

They are now looking for a 2009–2012 Mercedes Benz GL series with front-end damage. Investigators aren't sure of the colour.

Toronto Police

Police say an Acura EL was rear ended by a Lincoln Town car.

A 24-year old passenger in the Acura was taken to hospital with life-threatening injuries.

Police are still investigating the cause of the crash. They're asking anyone with information to call police at 416-808-1900, Crime Stoppers anonymously at 416-222-TIPS (8477), online at www.222tips.com, or text TOR and your message to CRIMES (274637).