Congress finalizes Biden's win after riot disrupts Capitol

CNN's Jake Tapper called the throngs of protesters surrounding the Capitol building an attempt at a coup.

"It's an absolutely shameful, disgusting situation that we're witnessing here," Tapper continued, slamming the President for encouraging protests by refusing to accept the election results.

Watch the moment:

Vice President Mike Pence has been evacuated from the US Capitol, where he was there for the Joint Session of Congress. 

The Electoral College certification vote has been paused after protesters breached the Capitol building.

The officer in the House chamber just told lawmakers they may need to duck under their chairs, adding that there are protestors in the rotunda of the US Capitol. 

Lawmakers have been told to "be prepared" to relocate to cloakrooms, but "at this point in time there is no threat to the chamber."

The doors are barricaded.

Amid a breach of the U.S. Capitol by Pro-Trump protesters, Rep. Adam Kinzinger, a Republican from Illinois, tweeted calling it a "coup attempt."

Here's the tweet:

The Electoral College certification vote has been paused and the Capitol is on lockdown, according to Capitol police officers.

Washington, DC, will be under a 6:00 p.m. ET curfew, Mayor Muriel Bowser announced in a tweeted statement. It will remain in effect until 6:00 a.m. Thursday.

The Electoral College certification vote has been paused after protesters incited by Trump breached the Capitol building.

"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" within the district, the statement said.

Here's her full statement:

The US Capitol Police is asking for additional law enforcement for assistance, including federal authorities, per a source familiar. 

The source said there are several suspicious devices outside the Capitol Building. 

A separate law enforcement source says the DC Metropolitan Police Department has sent more resources to assist the Capitol Police, including CDU platoons or Civil Disturbance Units.  

CNN's Pamela Brown reports. Watch:

CNN’s Alex Marquardt reports from the western side of the US Capitol that throngs of protesters are climbing the steps and terrace of the building in a "significant escalation.”

"I can see at least half a dozen protesters scaling, literally, climbing the walls of the Capitol to get up to where their fellow protesters are," he said.

Police have fired several rounds of tear gas, he reported. 

Marquardt said he did not see "any sort of sign of law enforcement" from where he stood.

The US Capitol is currently on lockdown, according to Capitol police officers.

The US Capitol has been breached during a tense situation with demonstrators, according to Capitol police officers.

The House doors have been locked and an emergency alert from the Capitol police just transmitted the same thing:

Capitol Hill police are also blocking anyone from moving from Senate office buildings into the US Capitol building. There are underground tunnels that link the office buildings with the Capitol building that senators, staff, and journalists use to travel back and forth. 

Watch more:

Donald Trump Jr. condemned protesters outside the Capitol building, saying "this is wrong and not who we are."

In a tweet, he urged demonstrators to be peaceful "and use your 1st Amendment rights, but don’t start acting like the other side. We have a country to save and this doesn’t help anyone."