Four pedestrians are injured after they were struck by a car downtown on Saturday afternoon, police say.

Police were called to the area of King St. W. and Bay St. due to a collision at roughly 3 p.m. They transported four people — including the driver — to hospital.

Police spokesperson Katrina Arrogante said she believes the pedestrians were walking eastbound on King St. W when the vehicle mounted the curb of the sidewalk and struck them before crashing into a pole.

One pedestrian is in life-threatening condition while the others are in serious condition. Arrogante said three of the pedestrians were transported to the hospital while the fourth was treated on scene.

The driver was arrested for “possibly” impaired driving, police posted on Twitter.

King St. is closed between Bay St. and University Ave. while police investigate.

Jacob Lorinc is a breaking news reporter, working out of the Star’s radio room in Toronto. Follow him on Twitter: @jacoblorinc