Capitol Police say the staffer was led “around security screening” by a Member of Congress prior to the arrest.

Cory Booker’s (D-N.J.) staffers was arrested on Monday for possession of a pistol, shortly before the senator began a marathon speech that was still going as of 1 p.m. Tuesday, with other Democrats regularly chiming in on the Senate floor.

"The staff member, 59-year-old Kevin A. Batts of New Jersey, was arrested for Carrying a Pistol Without a License. All weapons are prohibited from Capitol Grounds, even if you are a retired law enforcement officer, or have a permit to carry in another state or the District of Columbia," the statement continued.