BREAKING: Emergency situation at US Capitol, armed suspect shot after ramming car into officers

Update: Law enforcement sources have told ABC News that the suspect is dead.

Update: According to Fox News' Chad Pergram, the suspect got out of his car armed with a knife and was shot by officers.

Just months after the Jan. 6 riot, Capitol Hill has once again come under emergency lockdown as breaking reports of the shooting of two Capitol Police officers surfaced on social media. Per journalists present at the site, Capitol Hill has been placed on lockdown due to an “external security threat.”

Those inside the area are allowed to move around but were instructed to stay away from windows or open areas. According to PBS News’ Lisa Desjardins, staff were alerted of an “external security threat located at all of the U.S. Capitol Campus Buildings continues, and there is still no entry or exit permitted at this time,” at around 1:15pm EST. “You may move about within the buildings and underground between buildings. If you are outside, seek cover,” the advisory stated.

The lockdown was implemented after a car rammed into the barricade outside the Capitol Hill complex. Footage of what appears to be two people on stretchers were posted by Fox News’ Jacqui Heinrich.

Journalist Jake Sherman posted footage of a helicopter landing on the east front of the Capitol complex. “I’ve never seen anything like this before. Ever,” he wrote on Twitter.

Per the DC Fire and EMS scanner, three individuals were picked up from Capitol Hill, including two police officers.

Reports live from the scene mentioned shots being fired. It is unclear if the shots were fired by law enforcement or suspects at this time.

Details will be added to this post as more information becomes available.

This is a breaking story and will be updated.