Responding to dramatic incidents of pro-Trump insurrectionists overrunning barriers and breaking into the U.S. Capitol, D.C. Mayor Muriel Bowser announced a 12-hour curfew would take effect starting at 6 p.m. Virginia Gov. Ralph Northam announced a similar curfew in Arlington and Alexandria, and imposed a State of Emergency.

“During the hours of the curfew, no person, other than persons designated by the Mayor, shall walk, bike, run, loiter, stand, or motor by car or other mode of transport upon any street, alley, park, or other public place within the District,” announced Bowser’s office around 2:30 p.m. on Wednesday.

“The curfew imposed by the Mayor’s Order shall not apply to essential workers, including working media with their outlet-issued credentials, when engaged in essential functions, including travel to and from their essential work,” it added.

Metro also announced it would suspend rail service at 8 p.m. and bus service at 9 p.m.

The curfew follows reports of Trump supporters pushing their way into the Capitol, which was in the midst of separate House and Senate debates on Arizona’s electors for President-elect Joe Biden. Debate in both chambers was halted as lawmakers, staff and security became aware that insurrectionists had made it into the building, some of them even shouting from the House gallery.

Shortly thereafter, the entire Capitol complex was locked down by police. President Trump, who hours prior had given a rambling speech to supporters on the Ellipse in which he repeated falsehoods about the election being stolen from him, tweeted to exhort those same supporters to “stay peaceful!”

In response, D.C. Public Library locations closed their doors at 3 p.m. Public COVID-19 testing sites are also closed. In a tweet, Bowser encouraged residents experiencing coronavirus symptoms to isolate at home and call their doctor.

Safeway will close all of its D.C. grocery stores at 4 p.m. “due to Republican mob violence downtown,” according to a tweet from the union representing workers at the chain. The union said those scheduled to work in that time “will be paid but are not expected to work.”

At-Large Councilmember Christina Henderson, who worked as a Senate staffer before taking her seat in the Wilson Building, expressed shock that anyone would be able to breach the Capitol at such a time.

“As someone who worked in the United States Capitol for the past 4 years, I am stunned by what we are witnessing. Every day I passed USCP with significant weaponry, was questioned multiple times to see my ID, & have seen USCP use more force with protestors in wheelchairs,” she wrote on Twitter. “I want people to understand the United States Capitol Police is a separate entity from MPD. I don’t understand how USCP was so unprepared when they knew about the permits and these groups propensity for violence.”

Council Chairman Phil Mendelson also reacted on social media. “Trump started this. He needs to stop it. It’s sedition,” he tweeted.

This is not the first time Bowser has imposed a curfew amid protests: She put in place several curfews as protests against police violence broke out in the summer.

“This is a complete disgrace,” tweeted Ward 4 Councilmember Janeese Lewis George. “Over the summer we saw federal law federal law enforcement use tear gas, flash bangs, and rubber bullets on Black Lives Matter protesters without provocation. Where are the riot squads now? Are they standing down as white supremacists attempt a coup?”

This post has been updated with tweets from public officials, and additional information about the curfew.