1:11 p.m. Trump finishes his remarks.
1:34 p.m. Mayor Bowser asks Army Secretary Ryan McCarthy for additional Guard forces, according to a Pentagon timeline.
1:49 p.m. Capitol Police Chief Sund speaks with the commanding general of the D.C. National Guard Maj. Gen. William Walker by phone and requests immediate assistance.
2-2:30 p.m. NPR reporter Tom Bowman and producer Graham Smith watch from the Capitol lawn as D.C. police in riot gear move in and out of the crowds.
Moving to the Senate terrace, they see protesters smashing the door of the Capitol to gain entry, as Capitol Police inside work to push them back.
2:10 p.m. Capitol Police send an alert that all buildings in the Capitol complex are on lockdown due to "an external security threat located on the West Front of the U.S. Capitol Building. ... [S]tay away from exterior windows and doors. If you are outside, seek cover."
The House and Senate abruptly go into recess.
2:14 p.m. Demonstrators arrive close to the Senate chamber, as seen on video captured by Huffington Post reporter Igor Bobic. Capitol Police Officer Eugene Goodman redirects them to another hall where there are additional officers.
2:22 p.m. On a conference call with Pentagon officials, D.C. Mayor Bowser requests National Guard support and Capitol Police Chief Sund pleads for backup.
"I am making an urgent, urgent immediate request for National Guard assistance," Sund told The Washington Post he said on the call. "I have got to get boots on the ground."
D.C. officials on the call told the Post they heard director of the Army Staff Lt. Gen. Walter Piatt say that he could not recommend that his boss, Army Secretary McCarthy, approve the request and that he did not like "the visual" of a line of National Guard soldiers in front of the Capitol.
Piatt disputes this. He says that McCarthy ran to the office of Acting Defense Secretary Christopher Miller for approval as soon as he had a specific request for assistance from the Capitol Police. Piatt says he told the others on the call that he was not the approval authority and that they needed to make a plan for how to use the National Guard troops if approved.
2:24 p.m. Trump tweets criticism of Vice President Pence: "Mike Pence didn't have the courage to do what should have been done to protect our Country and our Constitution, giving States a chance to certify a corrected set of facts, not the fraudulent or inaccurate ones which they were asked to previously certify. USA demands the truth!"
2:30 p.m. Acting Defense Secretary Miller, Chairman of the Joint Chiefs of Staff Gen. Mark Milley and Army Secretary McCarthy meet to discuss the requests from Capitol Police Chief Sund and Mayor Bowser.
2:31 p.m. Bowser orders a citywide curfew beginning at 6 p.m.
2:44 p.m. From inside the House chamber come reports of an armed standoff at the door to the chamber. Police officers have their guns drawn on someone trying to get in.
6 p.m. Acting Defense Secretary Miller authorizes the mobilization of up to 6,200 National Guard troops from Maryland, Virginia, New York, New Jersey, Delaware and Pennsylvania, according to the Pentagon.
A curfew begins in Washington.