Capitol police officers drew their guns in an effort to secure the House chamber in an apparent standoff with protesters on Capitol Hill Wednesday.
Lawmakers and reporters were evacuated from the chamber shortly beforehand.
Tear gas was also deployed in the rotunda.
Photos showed the police inside the chamber, but the nature and extend of the threat outside from protesters was unclear as reports came in.
Capitol police barricaded the door to the House chamber and drew their guns in an apparent armed standoff with Trump supporters on Wednesday.
Images from the scene showed officers and security officials pointing their guns at the door, which was locked and had holes in it. The nature and extend of the threat outside from protesters was unclear as reports came in.
Lawmakers, staff, and reporters were told to evacuate the chamber and shelter in place, and tear gas was deployed in the rotunda.