At least nine people are dead and sixteen injured after a white van mounted the kerb and ran down pedestrians in Toronto, Canada.
Witnesses say the van struck a man crossing the road before mounting the kerb of a busy residential and business district at 1:30pm local time (3:30am AEDT).
The driver fled on foot and was arrested several blocks from the scene.
"He was just hitting people one by one," said one witness. "It was a nightmare."
Authorities say it's too early to definitively establish a motive for the incident and that terrorism has not been ruled "in or out".