ABC News was unable to immediately reach Klein for comment.
Tipsters and witnesses ultimately identified Klein to the Federal Bureau of Investigation following his resignation from State, after his image was featured on a law enforcement poster seeking information about unidentified rioters.
Capitol police officers suspended, more under investigation over pro-Trump riot.
According to the complaint, Mr Kelin is heard shouting: "We need fresh people, we need fresh people", as the mob attempted to break through police lines and into the Capitol building.
Klein is charged with several felonies, including assault on police officers, interfering with police during civil disorder and obstruction of an official proceeding, as well as lesser offenses.
Federico Klein told a judge he was having trouble sleeping in jail. "I haven't really slept at all, your honour". While working for his 2016 presidential campaign Klein earned a salary of $15,000, according to a public database of executive branch personnel. Faruqui set a bail hearing for Tuesday afternoon, saying he wanted to move briskly on the issue but also give Klein enough time to find a lawyer. "Witness 2 reported that they had no animosity towards KLEIN", court documents said. He was paid an additional $5,000 by the campaign in 2017, the FEC filings show.
Trump appointee arrested in connection with Capitol riot, charged with beating a police officer
Interestingly, an individual by the same name also worked for a short period on Capitol Hill about two decades ago, for the House Small Business Committee and as an intern for Sen. George Allen (R-Va.).
The Federal Bureau of Investigation said Thursday that it has arrested Federico Klein, one of former President Donald Trump's appointees to the U.S. Department of State, for his alleged role in the January 6 insurrection at the U.S. Capitol. "That's what he told me", Cecilia Klein said. She described her impression of their conversation as that her son did not enter the Capitol building, but did not remember if he specifically denied doing so.
"Look, what happened that day was awful, and I have said repeatedly that those folks who engaged in this activity need to be identified, prosecuted, and they are criminals and ought to be treated as such", Pompeo said to Hugh Hewitt, a conservative radio host.
"Fred's politics burn a little hot, but I've never known him to violate the law", she told Politico.
Federico Klein served as a Marine in Iraq, his mother said. He held a top secret security clearance that was renewed in 2019, according to the court papers. Klein's current employment situation is unclear. He also worked at the conservative advocacy organization, Family Research Council, which lobbies against pornography, abortion, divorce, and LGBT rights. More than 300 people have been charged with federal crimes. "Notes that obstruction of Congress charge carries a 20-year max, assaulting police [with] risky weapon also 20-year max", Politico's Josh Gerstein reported Friday.
Police uncover 'possible plot' by militia to breach Capitol
Capitol Police says that it is aware of a threat by an unidentified militia group to breach the Capitol complex on Thursday. Acting Chief Yogananda Pittman testified Wednesday before a House subcommittee.