Robert Mueller

Outgoing FBI Director Robert Mueller pauses during his remarks at a farewell ceremony held for him at the Justice Department in Washington, August 1, 2013. On Monday the U.S. Senate confirmed former Deputy Attorney General James Comey to replace Mueller, who has led the bureau since shortly before the September 11, 2001, attacks on the United States. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS CRIME LAW HEADSHOT)

Report: First Charges Filed In Mueller's Russia Probe

It is unclear yet who has been indicted or what the charges are in the investigation of Russian interference in the 2016 presidential election.