Toronto police say four people were taken to hospital, one in critical condition, after a car crash in Scarborough on Monday night.
The single-vehicle crash at McCowan Road and McNicoll Avenue took place shortly before 11 p.m.
Investigators said it appears the driver lost control of the car and mounted the curb when it crashed.
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The 20-year-old driver is in life-threatening condition while the other three occupants — two females and one male — suffered non-life-threatening injuries, police said.
Police said those injured appear to be between the ages of 20 and 25 years old.
Investigators said they are looking at speed as being a possible factor but are still investigating.