A purported new Islamic State propaganda video features a Canadian man who threatens violence and “punishment” against Canadians on their own soil.

In the video, distributed by a U.S. company that monitors jihadist posts around the world, the young man says others should follow the example of Martin Couture-Rouleau, who ran down and killed Warrant Officer Patrice Vincent in Quebec on Oct. 20.

The man identifies himself as Abu Anwar al-Canadi, but his real name is John Maguire. He studied at the University of Ottawa before “falling off the map” about two years ago, according to one fellow student.