United States (U.S.) President Donald Trump has declared a state of emergency in Washington D.C..

The declaration came on the heels of a revelation by the police of three plots to attack the Capitol Building ahead of Joe Biden’s inauguration, including the “largest armed protest in American history”.

It also came as the Federal Bureau of Investigation (FBI) alerted its agents to possible uprisings at capitols in 50 states ahead of Inauguration Day, particularly if Trump is removed from office before Biden enters the White House.

Trump’s declaration allows the Department of Homeland Security and Federal Emergency Management Agency to coordinate with local authorities as Democrats had been furiously demanding.

On Monday night, the new chiefs of Capitol Police told House Democrats they were looking into three separate plans, including one described as “the largest armed protest ever to take place on American soil”.