A 28-year-old Toronto woman died Tuesday after being hit by a car whose driver ran a red light and plowed into her as she crossed the street with her baby in a stroller, police said.

The accident happened at about 12:45 p.m. as the two crossed from the southwest corner of Martin Grove Road and Eglinton Avenue West to the southeast corner.

Police are questioning the 83-year-old woman who was driving the car to determine what she will be charged with, said Toronto police Const. Hugh Smith. She is in hospital being treated for shock.

Witnesses said that just before the vehicle hit, the mother pushed the stroller out of the way although police couldn't confirm those details. The 12-week-old baby boy, who fell out of the stroller, was taken to Toronto's Hospital for Sick Children but appears to have suffered only minor injuries, police said.

The Toyota Camry was travelling north on Martin Grove and appeared to go through a red light, police said. The mother, who was trapped under the vehicle, died on the scene shortly before 1 p.m.

A stroller could be seen at the southwest corner of the intersection, which was closed for several hours while police investigated. They are looking for more witnesses.