What we know about the "unprecedented" Capitol riot arrests

In the seven months since a mob of rioters stormed the U.S. Capitol more than 570 people had been arrested in connection with the siege, according to the Department of Justice.

The flood of people who streamed onto Capitol grounds that day left federal authorities with an immense task: finding and charging those responsible. Despite the pace of arrests, prosecutors said in July they still have yet to identify hundreds of people accused of committing violent acts on Capitol grounds, including assaulting law enforcement officers. Prosecutors have called the case "unprecedented" in scale, and the government has said in court that the Capitol attack "is likely the most complex investigation ever prosecuted by the Department of Justice."