The FBI is warning of plans for armed protests at all 50 state capitals and in Washington in the days leading up to President-election Joe Biden's inauguration, stoking fears of more bloodshed after last week's deadly siege at the U.S. Capitol.

An internal FBI bulletin warned that, as of Sunday, the nationwide protests may start later this week and extend through Biden's Jan. 20 inauguration, according to two law enforcement officials who read details of the memo to The Associated Press. Investigators believe some of the people are members of some extremist groups, the officials said. The bulletin was first reported by ABC.