The incidents had the hallmarks of recent terrorist attacks by Daesh in Europe.
The driver reportedly got out of his auto and went on the attack- stabbing an officer several times.
An ISIS flag was displayed on the dashboard of the vehicle that crashed into the barricade. Their conditions were not immediately known, the police chief said.
A Canadian police officer has been stabbed outside a football game and four pedestrians were injured by a fleeing truck in the Western city of Edmonton, in what police are investigating as acts of terrorism. "The officer sustained some injuries, he's in hospital, and thankfully he's doing OK".
The van was speeding west down Jasper Avenue at a high speed, with the police directly behind, said several who were on the street at the time. The officer recognized the name on the driver's ID as matching that of the owner of the SUV used in the attack.
A man driving a van went on to hit at least four pedestrians and was arrested two hours later after a police chase.
The van eventually flipped near a downtown hotel and the suspect was arrested.
- Just before midnight a U-Haul truck was pulled over at a police stop on the city's east side.
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When confronted, Knecht said the U-Haul sped off toward downtown with police cars in pursuit.
The driver, described by police as a 30-year-old Edmonton resident, was apprehended after the truck flipped onto its side.
It "peeled" into an alley where people were smoking, he said. It was insane. It just came around the corner, ripping.
In March 2016, a Canadian who said he was acting on orders of Allah attacked two soldiers with a knife at a recruitment center in Toronto.
"He was breathing and we got him in the ambulance and he was still breathing".
While being chased, the suspect tried to hit pedestrians as he passed by crosswalks and alleyways, Mr. Knetch said. "We have to show that's not going to happen, not in Edmonton", said group spokesman Aurangzeb Qureshi.
USA national security agencies are looking into the case and have yet to determine whether the attacker was working with others, including Islamic State, or if he was a "lone wolf", a US official told Reuters.
Rachel Notley, the Premier of Alberta and Leader of Alberta's NDP, tweeted: 'Our thoughts are with @edmontonpolice member injured on duty tonight & hoping for a speedy recovery.