Four people are injured, one seriously, following a three-vehicle collision in Scarborough Wednesday afternoon.

Toronto police said the incident happened at Ellesmere and Markham roads just after 2 p.m.

A man was taken to a trauma centre with serious, potentially life-threatening injuries, Toronto paramedics said. Three others were transported to a local hospital with minor injuries.

Police said all vehicles involved remained on the scene.

The cause of the collision is unknown.