A jury has convicted a man of carrying a loaded shotgun near the U.S. Capitol and hiding explosives in his truck.

Thirty-eight-year-old Michael Gorbey of Rapidan, Virginia was arrested January 18 while he was walking with the shotgun and a three-foot-long sword near the Capitol. Authorities found a homemade explosive device behind the drivers seat of his truck several weeks later.

Gorbey told officers he was heading to an appointment with Supreme Court Chief Justice John Roberts.

Friday, a D.C. Superior Court jury found Gorbey guilty of 14 charges that included trying to possess or make a weapon of mass destruction.

During the more than two-week trial, Gorbey, who represented himself, claimed police planted the explosives and that he was only carrying a walking stick when he was arrested.