An Army Special Forces soldier was arrested after a pair of hunters found about 100 pounds of explosives outside his home near Fort Campbell.

Timothy Ryan Richards appeared in federal court Monday in Nashville on charges of possessing two unregistered guns.

Alcohol, Tobacco, Firearms and Explosives agent Eric Kehn (KEEN) said he expects Richards will face more charges related to the discovery of the explosives.

An affidavit says agents found about 100 pounds of explosives -- including C-4, a plastic explosive commonly used by the military. The material was sealed in watertight containers and partially buried.

An FBI spokesman told The Associated Press investigators don't think the explosives were connected to domestic or international terrorism.

Richards' age and rank weren't immediately available.