A pedestrian suffered serious injuries after jumping onto the back of a vehicle overnight in East York, Toronto police say.

Police received a call for a hit-and-run at around 2:15 a.m. in the area of Donlands Avenue and O’Connor Drive and found the man in his 20s unconscious at the scene.

The man has been taken to hospital with serious injuries, investigators confirm.

“It looks like a male jumped onto the back of a stopped cube van, and when the light turned green the cube van made a left and the man that was on the back of it fell off,” Det. Const. Scott Matthews said.

“The vehicle did not remain, but I don’t think the driver actually knew (what happened).”

While officers were investigating, a 48-year-old man with a blood-alcohol level above the legal limit “barrelled” through the crime scene, Matthews added. He was charged with impaired driving.

Roads are now open in the area. Police are continuing to investigate and are asking witnesses to come forward.