A female pedestrian has been seriously injured after being struck by a vehicle in downtown Toronto.

It happened in the area of Bay and College Streets just after 5:45 p.m.

Toronto police said the woman believed to be in her 40s was struck when she was either entering or exiting a streetcar.

Paramedics said they have taken the woman to a trauma centre in serious condition.

The driver of the vehicle remained at the scene.

The westbound lanes on College Street were blocked between Yonge and Bay streets for investigation. Roads have since reopened.