WASHINGTON, D.C. — A South Carolina pork-and-poultry executive was charged after police said he tried to enter a congressional office building in Washington, D.C., with a loaded handgun.

Ronald William , 59, of Camden, was arrested after he tried to enter the Cannon House Office Building on Wednesday morning with a 9 mm Ruger, said U.S. Capitol Police.

A court document said Prestage’s briefcase was put through an X-ray machine, and the weapon was discovered inside in a black ankle holster.

Court documents said Prestage said he has a permit to carry a concealed weapon in South Carolina. District of Columbia law does not allow the carrying of concealed weapons, and Prestage was charged with carrying a pistol outside a home or business.

Prestage is an executive of Prestage Farms, based in Clinton, North Carolina, and a member of the North Carolina State University Board of Trustees.

He also is president-elect of the National Pork Producers Council, a lobbying group.

A spokesman for the group, David Warner, said in an email Thursday that Prestage was not on official business for the group when he went to the Cannon building on Capitol Hill. The building houses offices for members of the House of Representatives. Telephone messages left with Prestage Farms were not immediately returned.