Canadian police said an attack on an officer outside a football game with a car and knife, and a high-speed chase of a U-Haul van that left four other people injured in the western city of Edmonton, Alberta, are being investigated as acts of terrorism.
Edmonton Police chief Rod Knecht said that officers took a suspect in custody and they think he acted alone. Knecht said an Islamic State group flag was found in the car that hit the officer. They later described him as a 30-year-old Edmonton man.
The attack began outside Commonwealth Stadium on Saturday night when police say a white Chevrolet Malibu rammed a traffic control barricade and sent an officer flying into the air 15 feet. A Canadian Football League game was in progress at the stadium.