WASHINGTON (DC News Now) -- One of Sen. Cory Booker's (D-NJ) staff members was arrested Monday evening for carrying a pistol while at the U.S. Capitol, authorities confirmed. The U.S. Capitol Police (USCP) said that on Monday afternoon, a Congressperson led an ID'd staff member - later identifie d as 59-year-old Kevin A. Batts of New Jersey - around security screening at the Hart Senate Office Building. Later that evening, outside the Senate Galleries, Batts, a retired law enforcement officer, told USCP officers he was armed. Booker sets record for longest Senate speech in history The USCP said he 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 USCP wrote in a statement to DC News Now. Though the USCP did not confirm Batts's employing office, he is listed as a special assistant to Sen. Cory Booker on Legistorm. DC News Now reached out to Booker's office for a statement, but has not yet received a response. ...read more read less