Three suspected neo-Nazis were arrested after allegedly discussing plans to show up to a pro-gun rally in Virginia next week where they anticipated a race war might ensue, according to The New York Times.

The men were arrested Thursday morning following a long-running investigation by the FBI into a white supremacist organization, the Times reported. That group, called The Base, describes itself as an international survivalist and self-defense network preparing for a race war.

One of the men, 27-year-old Patrik Mathews, is a suspected neo-Nazi and former reservist in the Canadian Army. Mathews fled Canada and entered the U.S. illegally last August after he was fast-tracked out of the military following his alleged ties to the white supremacist movement and The Base. Mathews, who trained as a combat engineer, is suspected by authorities of being a top recruiter for The Base.

Also arrested were Brian M. Lemley Jr., 33, and William G. Bilbrough IV, 19, according to the Times. The latter two suspects were charged with transporting and harboring aliens along with conspiracy. Mathews and Lemley were charged with transporting a firearm with intent to commit a felony. Mathews was also charged with being an alien in possession of a firearm and ammo.