© Provided by The Independent Donald Trump's supporters are allegedly planning a second attack on the US Capitol on 4 March, a Democrat on the House Armed Services Committee has said.
Adam Smith, the chairman of the committee, told defence officials that QAnon conspiracy theorists and Trump supporters were considering another siege on the Capitol on that day.
QAnon conspiracists - borrowing claims made by the extremist sovereign citizens movement - believe that Mr Trump will come back as US president on 4 March, the day inaugurations took place before 1933.
According to bizarre theories circulating online, the United States has not been a country since the gold standard was unpegged in 1933 under Franklin D Roosevelt, while no president has been legitimate since a certain law was passed in 1871 under Ulysses S. Grant.
Video shows crowd responding to Trump speech by chanting 'Take the Capitol'.mp4
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Mr Smith told defence officials, "they are thinking maybe we should gather again and storm the Capitol on March 4, that is circulating online".
"Stuff like that circulates all the time, does it mean it's going to happen, probably not," said Mr Smith, "but if you want to help, tell them not to do that, tell them that the election is over. Joe Biden won."
Concerns about QAnon and Trump supporters planning another attack on 4 March have been circulating for weeks, as Julian Feeld, producer of the QAnon Anonymous podcast that debunks QAnon theories, told CNN.
"I think there is obviously different beliefs about what will happen on that day, but I think many people are expecting a ceremony, and that ceremony might be accompanied in their mind by what QAnon believers call 'the storm'", said Mr Feeld.
"That would be the rounding up, or military tribunals, you know for leading Democrats and some celebrities they believe, falsely, to be part of this secret paedophile cabal. So essentially people are still in this belief that Trump will come back, and will become the president again."
The meeting between Congressional lawmakers and defence officials comes after the Pentagon and US Capitol Police were both criticised for their response to the 6 January attack on Congress, which left at least five people dead.
According to Robert Salesses, the Assistant Secretary of Defense for Homeland Defense and Global Security, as many as 5,000 members of the National Guard will remain stationed in Washington DC until mid-March, amid concerns surrounding QAnon and 4 March.
The Pentagon official added that they are working with the US Capitol Police - who requested the 5,000 troops - and others to determine "the right level of security".
"We work very closely with the FBI, Secret Service, and others and the Capitol Police to try to determine what they believe that threat is, and then looking at what they believe is the need for the National Guard," said Mr Salesses.
According to CNN, Mr Salesses said there was "no specific, credible threat to the homeland at this time", but that the situation continued to be monitored.