Capitol Hill staffer arrested after bringing gun to House of Representatives building, Capitol Police say

• A Capitol Hill staffer brought a gun to a House of Representatives building, police said.
• Capitol Police said they spotted a gun in an X-ray scan and tracked down a man four minutes later.

A Capitol Hill staffer brought a gun to a House of Representatives building on Thursday morning, US Capitol Police said.

Officers at the Longworth building spotted the gun during an X-ray scan at a security checkpoint, police said.

Police said they tracked down and arrested the person who brought in the gun four minutes later.

Jeffrey Allsbrooks, 57, who works at the House Chief Administrative Office, told police he forgot that he had a gun in his bag.

He's being charged with carrying a pistol without a license, police said.

Capitol Police said they're still investigating the situation.

This story is developing. Please check back for updates.