The suspect - who has since been pronounced dead - entered the North barricade of the Capitol just after 1 p.m. ET, ramming his vehicle into two officers and then crashing into a barrier, Acting Capitol Police Chief Yogananda Pittman said at a briefing. One of the officers who was injured was taken by police vehicle to the hospital; the other was transported by emergency medical crews, the officials said.
"All three have been transported to the hospital", the Capitol Police tweet said.
Speaking to MSNBC, and confirming some of the details of what took place, one Capitol Hill Police officer reportedly told the outlet: "We've been attacked".
US Capitol Police officers near a vehicle that crashed into a barrier on Capitol Hill in Washington.
Video shared on social media also showed a helicopter landing at the Capitol.
National Guard troops were mobilized and staff at the huge Capitol complex ordered to stay away from windows and seek cover after alerts went out over the incident. Fencing that prevented vehicular traffic near that area was recently removed as the Capitol started to open up after the January 6 riots.
In this video screengrab, two stretchers can be seen being brought out to tend to two officers in the U.S. Capitol complex.
Security at the Capitol has been very heavy since a mob attacked police and overran security checkpoints on January 6 after attending a political rally organized by former President Donald Trump. The outer ring of fencing was taken down just this week, although an inner ring of fencing remains around the U.S. Capitol building.
Members of Congress, who were in their home districts for the Easter and Passover holidays, once again mourned the loss of a Capitol Police officer, a member of the force that protects them when they're in Washington.
The incident occurred about 100 yards (91 meters) from the entrance of the building on the Senate side of the Capitol.
House Minority Leader Kevin McCarthy asked for prayers for the injured officers. And I can't imagine saying that, that going to the United States Capitol to represent your constituents, is actually a risky thing in the United States of America. "They reacted quickly and bravely, as did all the other first responders at the scene".