Over 300 charged from more than 40 states: What we know about the "unprecedented" Capitol riot arrests

America watched as hordes of rioters broke into the U.S. Capitol on January 6 — crushing through windows, pressing up stairways, and sending lawmakers and law enforcement running for their lives. The flood of protesters who streamed into the Capitol that day left federal authorities with an equally immense task: finding and charging those responsible.

Federal prosecutors have now charged at least 304 people in connection with the events of January 6, and around 100 more are still expected to be charged, the government said Friday in a court filing. "The Capitol Attack is likely the most complex investigation ever prosecuted by the Department of Justice," the filing read. Acting Deputy Attorney General John Carlin said last month, "The investigation into those responsible is moving at a speed and scale that's unprecedented, and rightly so. Those responsible must be held to account, and they will be."