Capitol Rioters Communicated Using Military Hand Signals, Law Enforcement Official says

A Washington D.C. police officer witnessed rioters using military-style hand signals to communicate inside the Capitol building during the breach on January 6, a law enforcement official tells CBS News.

The identification of individuals using military, small unit tactics is among the "highest priorities" for a Sedition Task Force being run by the D.C. U.S. Attorney's office. The apparent use of "small unit tactics," trained to military and law enforcement, drew immediate scrutiny from investigators. These tactics were witnessed both outside and inside the Capitol Building, CBS News has learned.

Federal investigators are reviewing images that appeared on social media, as well as thousands of hours of video from closed circuit cameras positioned outside the Supreme Court, the Library of Congress, the Republican National Committee, the Democratic National Committee, the Capitol campus and police body cameras.

Acting U.S. Attorney for the District of Columbia Michael Sherwin said Tuesday his office is looking into possible seditious conspiracy charges in its investigation of the riot.

Sherwin said the investigation into rioters' planning includes combing through travel records, financial information and communications. 

On Thursday, prosecutors said a retired Air Force officer who was arrested in Texas after being featured in a viral photo carried plastic zip-tie handcuffs because he intended "to take hostages." 

"He means to take hostages. He means to kidnap, restrain, perhaps try, perhaps execute members of the U.S. government," Assistant U.S. Attorney Jay Weimer said of retired Lieutenant Colonel Larry Rendall Brock Jr., who was also the subject of a New Yorker article. 

Federal authorities have charged more than 40 people in connection with the Capitol riot. Among them were two off-duty Rocky Mount, Virginia, police officers, Jacob Fracker and Thomas Robertson, who are each facing one count of knowingly entering or remaining in any restricted building or grounds without lawful authority and one count of violent entry and disorderly conduct on Capitol grounds.

Fracker is a corporal in the Virginia National Guard, and he is not currently on duty with Virginia National Guard troops in Washington, D.C. The Virginia National Guard will be conducting an investigation. 

Prosecutors wrote in a complaint that Robertson wrote in a social media post, "CNN and the Left are just mad because we actually attacked the government who is the problem and not some random small business ... The right IN ONE DAY took the f***** U.S. Capitol. Keep poking us." 

Fracker posted a since-deleted comment on Facebook that read, "Lol to anyone who's possibly concerned about the picture of me going around... Sorry I hate freedom? …Not like I did anything illegal…y'all do what you feel you need to," according to the complaint.