Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. 'Lone Wolf' Suspected in Canada Terror Attack by VOA News Canadian police have arrested a man who struck a police officer with a car outside a sports stadium in Edmonton and then repeatedly stabbed the officer before fleeing the scene. The same man later struck four pedestrians with a moving van during a high-speed chase late Saturday. All five victims remain hospitalized with undisclosed injuries. Neither the victims nor the suspect has been publicly identified. Edmonton Police Chief Rod Knecht said the suspect, described only as a 30-year-old Edmonton man, had an Islamic State flag in the car that struck the officer. But officials say it appears he acted alone. "To the best of our knowledge, this was a lone wolf attack,'' Edmonton Mayor Don Iveson said. Knecht said Edmonton police were working with the Royal Canadian Mounted Police's National Security Enforcement Team and other Canadian security agencies. He advised the public to remain vigilant and observant of their surroundings. Canadian Prime Minister Justin Trudeau said in a statement that Canadians "stand with the people of Edmonton after the terrorist attack on Saturday that sent an Edmonton Police Service officer to hospital and injured a number of innocent people who were out to cheer on their football team and to enjoy an evening in their city.'' "We cannot - and will not - let violent extremism take root in our communities. We know that Canada's strength comes from our diversity, and we will not be cowed by those who seek to divide us or promote fear," Trudeau said.