Marine arrested on gun charges on Capitol grounds

A Marine detailed to the office of California GOP Rep. Duncan Hunter Jr. has been arrested for possession of an unregistered firearm after a loaded .45 caliber handgun was discovered in his vehicle.

Gunnery Sgt. Peter Boby, a congressional fellow in the Corps' Office of Legislative Affairs, was arrested Tuesday after being stopped at a security checkpoint near a House office building, according to the U.S. Capitol Police.

Boby was also charged with carrying a pistol without a license and possession of unregistered ammunition. He was being processed at Capitol Police headquarters.

Congressional fellows remain employees of the Pentagon and are dispatched to Capitol Hill offices, where they assist lawmakers and broaden their work experience.

A press aide to Hunter did not immediately respond to a request for comment.