Manhunt Intensifies as Authorities Warn Some Rioters May Face Sedition Charges

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Evidence emerged that top officials, including at the F.B.I., had warnings about violence before the riot at the Capitol.

WASHINGTON — Federal law enforcement officials vowed on Tuesday to accelerate a nationwide manhunt for hundreds of people who committed serious crimes during last week’s assault on the Capitol, even as new evidence surfaced that the F.B.I., police and White House were warned of potential violence that day.

Michael R. Sherwin, the acting U.S. attorney in Washington, called the investigation into the attack on the Capitol “unmatched” in scope and said it had already resulted in more than 170 cases involving 100,000 digital tips. He pledged that prosecutors could file charges of seditious conspiracy, murder and other serious felonies in the weeks ahead.

“The Capitol grounds outside and inside are essentially a crime scene,” Mr. Sherwin said during a news conference in Washington, adding that “we have literally thousands of potential witnesses” around the country. Continue reading.