Police believe that the 30-year-old driver, who has not been publicly identified, acted alone, but the investigation is ongoing.
Edmonton in #Canada was the scene of a terror attack in which an Islamic State group flag was found inside a auto believed to have been involved in the incident.
At approximately 8:11 p.m. on September 30, EPS Constable Micheal Chernyk was purposely struck by a white Chevrolet Malibu near Commonwealth Stadium in Edmonton while he was conducting traffic control at a public event. Police say four pedestrians were struck by the truck and taken to hospital with multiple injuries.
Knecht said the assailant was known to police, but did not release his name.
Police investigate the scene where a man hit pedestrians and then flipped the U-Haul truck he was driving on Saturday in Edmonton, Alberta.
A policeman in Canada's Edmonton city was rammed by a motorist who then attacked him with a knife on Saturday night while four pedestrians were hit by a van later in a pair of suspected terror attacks, reports said.
Canadian police have arrested a Somali man who struck a police officer with a auto outside a sports stadium in Edmonton and then repeatedly stabbed the officer before fleeing the scene.
Degrand said files on the suspect were kept and shared with other intelligence and police agencies. A man then jumped out of his vehicle and began viciously stabbing the officer with a knife.
An Islamic State militants flag was seized as evidence, he said.
It was the latest in a series of assaults around the world that the authorities have labelled as terrorism, including a blast on a commuter train in London last month and Sunday's knife attack at the Saint Charles train station in Marseille, France.
Elgie said the van hit a man who was a bar customer.
The van eventually rolled near a downtown hotel and a suspect was arrested.
"I didn't do anything, and I drove", she said.
"To the best of our knowledge, this was a "lone wolf" attack", he said.
"There were like 10 cop cars following him ..." "It just came around the corner, ripping".
"We can not - and will not - let violent extremism take root in our communities", Mr. Trudeau said.
"The complexities of a terrorism investigation are vast".
Alberta premier Rachel Notley last night tweeted to wish the injured officer a "speedy recovery". "If you've got 20 cops chasing one guy and there's pedestrians that are walking down this road?"