Paramedics have rushed four people to a trauma centre after a serious collision in the area of Don Mills Road and Finch Avenue West around 10 a.m. Monday morning.

Toronto EMS says they found two people unconscious initially. 

At least one person is in life-threatening condition and two others have serious injuries as a result of the crash, they say.

The T-bone collision caused "extensive damage," according to police. 

The entire intersection is closed for investigation.