Story highlights Canadian police kill 24-year-old Aaron Driver after he detonates an explosive device, authorities say

Driver produced a video indicating he was "in the final stages of an explosives attack," police say

(CNN) Police shot and killed a 24-year-old man they say was in the final stages of a terror attack targeting a Canadian urban center during rush hour, authorities said Thursday.

The suspect, with whom police were familiar from past terror investigations, was identified as Aaron Driver, said Mike Cabana, deputy commissioner of federal policing for the Royal Canadian Mounted Police.

Driver was killed Wednesday outside his sister's home in Strathroy, Ontario, just after entering a cab around 4:30 p.m., Cabana said. Police engaged Driver, who detonated an explosive device inside the cab, injuring the driver, he said.

It's unclear if Driver, who was wearing a backpack, was carrying the explosive on his body or elsewhere, said RCMP Assistant Commissioner Jennifer Strachan, commanding officer of the Ontario division.

Police believe Driver was planning to stage an attack within 72 hours, Cabana said.

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