US Capitol Police Warn of Possible Militia Plot To Breach Congress
The move was prompted by intelligence that a militia group planned the attack for 4 March – the day conspiracy theorist group QAnon believes Donald Trump will return for a second term.
The House of Representatives cancelled Thursday’s session, but the Senate will continue with its agenda.
A mob loyal to Mr Trump stormed the Congress building in January.
That attack came as lawmakers were inside moving to certify Democrat Joe Biden’s election victory. Mr Trump still refuses to admit losing the election.
The riot saw five people including a police officer killed and shook the foundations of American democracy. The head of the Capitol police force later resigned.
What does the intelligence say?
“As of late February, an unidentified group of militia violent extremists discussed plans to take control of the US Capitol and remove Democratic lawmakers on or about 4 March and discussed aspirational plans to persuade thousands to travel to Washington DC to participate,” a new intelligence bulletin issued by the FBI and Department of Homeland Security says.
“We have already made significant security upgrades to include establishing a physical structure and increasing manpower to ensure the protection of Congress, the public and our police officers.
“Due to the sensitive nature of this information, we cannot provide additional details at this time.”
Why is Thursday significant for QAnon?
Supporters of an extremist conspiracy theory known as QAnon falsely believe Thursday will mark Mr Trump’s return to the White House for a second term.
QAnon is a wide-ranging and completely unfounded theory which says that President Trump is waging a secret war against elite Satan-worshipping paedophiles in government, business and the media.
Security services were aware of online QAnon discussions surrounding 4 March, but did not “have any indication of violence or a specific, credible plot at this time”, an FBI official had told The Washington Post last week.
Capitol riot aftermath
Democrats said the attack amounted to an insurrection and the House voted to impeach Mr Trump for allegedly inciting the mob. The former president – the first in US history to be impeached twice – was later acquitted in the upper chamber, the Senate, with many Republican senators sticking by him.
Leon Panetta, a former US Defence Secretary and CIA chief, told the BBC that police would take no chances following January’s attack.
“We have got to have constant intelligence on domestic terrorists, have to track their possible efforts to again repeat what happened on January sixth and I think that’s what you’re seeing now, is an abundance of caution to make sure that we are properly prepared to react, if in fact any group attempts any kind of armed attack again on the United States Capitol,” he said.
There are dozens of militias across the US with varying ideologies, but generally they are anti-government. While they don’t necessarily advocate violence, often they are armed and some have engaged in violent demonstrations.
Many say they are acting in self-defence over fears of what they believe to be increasing federal government intrusion, with gun control a particular concern.