Authorities believe that suspect, Kyle Joekel, 29, may have ties to anti-government groups, in particular a loose organization known as Posse Comitatus that generally doesn't recognize authority above the level of county sheriff.

Group members refuse to recognize various aspects of federal authority, and some refuse to pay taxes. The group has been associated with citizen militias as well as neo-Nazi organizations.

Five of them had apparently been under surveillance in DeSoto Parish in north Louisiana two months ago, and at least one of them was considered a fugitive in Nebraska and Kansas for "making terroristic threats" as well as allegedly selling marijuana.