Former Canadian Army Reserve Master Cpl. Patrik Mathews, 26, was first identified as a member of The Base by Winnipeg Free Press reporter Ryan Thorpe.
Days after Thorpe's report was published, Mathews went missing and was discharged from the military for his alleged ties to the group. His car was found about 10 miles from the U.S. border soon thereafter, and police found a cache of weapons when they raided his home.
Vice reporters Ben Makuch, Mack Lamoureux, and Zachary Kamel, citing confidential sources, reported on Thursday that Mathews had been illegally smuggled across the border and is being hidden by members of The Base, which has operated in encrypted chatrooms as a largely online organization.
Lt. Christopher Paul Hasson will appear in U.S. District Court in Greenbelt, Maryland, on Oct. 21 for what is scheduled to be a six-day jury trial. The officer, whom government officials called a "domestic terrorist" in initial court filings, has remained in custody since his arrest Feb 15.