FBI official Steven D'Antuono says the bureau has opened 160 case files relatd to U.S. Capitol insurrection.

"That's just the tip of the iceberg."

Acting U.S. attorney Michael Sherwin on U.S. Capitol investigation.

"I think the scope and scale of this investigation in these cases are really unprecedented not only in FBI history but really in DOJ history."

He says the Capitol Grounds are, essentially, a crime scene.

SHERWIN describes "mind-blowing" range of criminality. Range of charges include:

-Simple trespassing
-Theft of mail
-Theft of digital devices
-Assault on local/fed officers
-Theft of potential national security info
-Felony murder

SHERWIN adds this is just the beginning.

He says they're charging some of these suspects quickly on the first possible charge, which buys law enforcement time to develop far more significant investigations leading to bigger charges.

🚨SHERWIN: "We're looking at significant felony cases tied to sedition and conspiracy."