Police are seeking witnesses after two collisions left pedestrians with critical injuries on Friday afternoon.

The collisions occurred over the span of 40 minutes in North York and Leaside.

In a news release issued Monday, police said they responded to a report of a collision on Keele St. near St. Regis Cres. around 5:20 p.m., where they found a 75-year-old woman with life-threatening injuries.

Police said the woman was crossing Keele mid-block, approximately 20 metres south of a traffic light, when she was struck by a southbound Chevrolet Cruze.

The driver of the Cruze remained at the scene, police said.

Then around 6 p.m., police responded to a report of a collision at the intersection of Eglinton Ave. E. and Brentcliffe Rd., where they found a 58-year-old man with life-threatening injuries.

Police said the man was crossing Eglinton in a motorized wheelchair when a westbound Kia Forte hit him.

The man was crossing against a red light when he was hit, police said.

The driver of the Kia remained at the scene.

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