The leader of far-right militia group the Oath Keepers has been charged with seditious conspiracy over last year's attack on the US Capitol.
Stewart Rhodes was among 11 people to be charged with the crime on Thursday. He was arrested at his home in Texas, according to his lawyer.
This is first time the sedition charge has been applied over the deadly riot.
The sedition charge is defined as attempting "to overthrow, put down or to destroy by force the government of the United States".
The Department of Justice accuses Mr Rhodes of working with other Oath Keepers - a loosely-knit militia that believes the US government has been corrupted by elites - to transport weapons and ammunition to Washington DC in their effort to block Mr Biden's presidency.
Prosecutors say that starting in late December 2020, Mr Rhodes used encrypted communications to plan the attack on Congress, although he himself is never said to have entered building.
Question is will the leader of this picnic be brought up on charges as well? How much did Trump know about what this guy was doing? One things for sure. Things are just gettin' warmed up.
He is accused of creating several "quick reaction force" teams, which "planned to use the firearms in support of their plot to stop the lawful transfer of presidential power".
The charges allege that Mr Rhodes split members into different "stacks," who went into the Capitol heavily clad in riot and tactical gear.
The first "stack" split up after entering the building and went separately to the House and Senate chambers, while the second "stack" confronted officers in the Capitol Rotunda, according to prosecutors.
