Obtained by ABC News, the FBI bulletin indicates agents received information that also detailed an unidentified group was calling for the "storming" of state, local and federal courthouses if Trump were to be removed from office before Inauguration Day.
News of the FBI memo was confirmed by NBC News, which wrote that it "doesn't mean that law enforcement agencies expect violent mass protests or confrontations in every state", and NBC quoted an FBI spokesperson in Boston as saying that "the FBI Boston Division is not in possession of any intelligence indicating any planned, armed protests at the four state capitals in our area of responsibility" from January 17 through the 20th.
The agency has "received information about an identified armed group intending to travel to Washington, DC on January 16".
Biden's inaugural committee said on Monday the theme of the January 20 ceremony would be "America United". The FBI respects the rights of individuals to peacefully exercise their First Amendment rights.
Threatened with more violence from outgoing President Donald Trump's supporters following last Wednesday's storming of the U.S. Capitol, the Federal Bureau of Investigation issued warnings for next weekend that run at least until Inauguration Day, the source said.
Authorities are preparing for additional personnel to help secure the nation's capital in the coming days.
In a letter to Acting Homeland Security Secretary Chad Wolf made public on Sunday, Bowser urged the department "to adjust its approach to the inauguration in several specific ways", including a federal force deployment plan for all US government property. Dozens of people have been charged in the violence and hundreds more cases are expected. "This inaugural planning period has to be very different than all the others", she told reporters on Monday.
Speaking at a news conference Monday, Bowser, a Democrat, stressed that she was concerned about more violent actors potentially coming to the city in the run-up to the inauguration, saying, "If I'm scared of anything, it's for our democracy, because we have very extreme factions in our country that are armed and risky".
"Trumpism won't die on January 20", said Bowser, who has asked Trump and acting Homeland Security Secretary Chad Wolf to declare a pre-disaster declaration for DC.
This story is breaking and will be updated.