TORONTO -- A man has sustained life-threatening injuries after a multi-vehicle collision on the Gardiner Expressway Monday morning.

The incident occurred around 9:40 a.m. in the westbound lanes of the expressway near Yonge Street.

Two vehicles were involved, police say, and one man was transported to a local hospital for treatment.

The westbound Gardiner Expressway was closed from the Don Valley Parkway to the Yonge-Bay Street exit for a couple of hours while police investigated the incident. The roads have since reopened.

Update: westbound Gardiner Expressway closed from DVP to Yonge Street / Bay Street exit @TPS52Div. #GO133202 ^CdKhttps://t.co/WGC8gfWY8N — Toronto Police Operations (@TPSOperations) January 20, 2020

No further details have been released regarding the circumstances of the crash.