A 59-year-old woman was killed by a driver who mounted a sidewalk in Scarborough on Friday.

Toronto police say the Nissan SUV was travelling westbound on Ellesmere Road toward Birchmount Road shortly before 6:49 a.m.

A TTC bus was stopped on the road just before the intersection, and two pedestrians were on the sidewalk near the bus.

Police cordoned off the crash site to investigate what may have caused the vehicle to jump the curb. (CBC)

"And for some unknown reason [the vehicle] mounted the curb and struck the two pedestrians that were on the curb," said Sgt. Alex Crews.

One of the pedestrians was pronounced dead at the scene after emergency crews arrived. The other, a 32-year-old man, was taken to hospital with non-life-threatening injuries.

The driver of the car remained at the scene. Police said it was too early to say if the 46-year-old woman would face any charges.