Sharif is charged with five counts of attempted murder and four counts of risky operation of a motor vehicle causing bodily harm.
He had been investigated two years ago for promoting extremism but had not been deemed a threat, according to the Royal Canadian Mounted Police (RCMP) said.
Stacey Talbot, with Alberta's Integrated National Security Enforcement Team, said the investigation of Abdulahi Hasan Sharif is still "in its infancy".
Chernyk managed to radio in what had happened and the manhunt was on.
Authorities confirmed that an ISIS flag was found inside the suspects vehicle and say the officer's injuries are not life threatening.
At approximately 8:15 p.m. Saturday (0215 GMT Sunday) a man in a speeding white Chevy Malibu crashed through police barricades outside Edmonton's Commonwealth Stadium, where a Canadian Football League game was being played. Four pedestrians were struck during the chase in what police say appeared to be a deliberate action.
Sharif was arrested after allegedly hitting a police officer at a roadblock at 107A Avenue and 92 Street with a auto, before stabbing him, and fleeing the area on foot at about 8:15 p.m. Saturday evening.
The U-Haul hit and injured four pedestrians before it flipped over. The Islamic State, which has lost most of its territory in Syria and Iraq in recent months, asserted responsibility for the European assaults.
Stadium collapse injures 25 in France
The fact that the stadium was being refurbished has nothing to do with the barrier collapse, according to French authorities. The incident happened at the Licorne stadium during a Ligue 1 match between Amiens and Lille at Stade de la Licorne.
Degrand said an investigation was launched and RCMP interviewed the suspect, among other people.
The police will hold a new press briefing at 3:00 pm Eastern Time.
On Monday, an unmarked police vehicle was parked in front of the plain three-storey building listed as Mr. Sharif's address in court documents.
"At that time, he did not show signs warranting keeping him any further", Degrand said, adding that until Saturday, he "hadn't done anything negative towards the police". "Edmonton is a strong and resilient city, and I am confident that its citizens will support one another to overcome this tragic event", the prime minister said.
Elgie said the van hit a man who was a bar customer.
This incident recalls the modus operandi of attacks on the car-aries in several european capitals, but also an attack in October 2014 in Quebec, in which a member had been killed. "We are part of the fabric of this country".
Edmonton's mayor Don Iveson said the violent attacks were the work of a "lone wolf".
"We are still very much in the infancy stage", she said.