The U.S. Capitol and the Capitol Visitors Center is on lock down amid police activity on the scene, according to the U.S. Senate Sergeant at Arms Office.

Related to this incident, the U.S. Capitol Police are continuing to investigate the suspicious package on the lower West Terrace of the U.S. Capitol Building. They said the suspected shooter has been neutralized, but the U.S. Capitol Building has been locked down as a precautionary measure.

Frank Thorp, a NBC News producer and reporter, said Capitol staff has been instructed to shelter in place after reports of a man shooting himself in the vicinity of the Capitol.

NBC News reporter Pete Williams said the suspected shooter has shot himself, and the package is a suitcase near the man. Williams reports police are searching for the man’s car.