Mark Adams Prieto, who had nearly 200 guns in his house, allegedly told an undercover agent about his plans to carry out a mass shooting at a rap concert in Atlanta.

Twenty-seven year FBI veteran Jack Cloonan says that The Base and international terrorist groups share similar goals, such as the destruction of U.S. government.

The arrests come a day after three other members of The Base, a collective of hardcore neo-Nazis that operate as a paramilitary organization, were arrested on federal charges in Maryland and Delaware.