Deputy Attorney General Rod Rosenstein announced the indictment during a Friday press conference. "Together with our law enforcement partners, the Department of Justice is resolute in its commitment to locate, identify and seek to bring to justice anyone who interfere with American elections".
While Friday's indictment does not include any criminal allegations against a US citizen, the charges note that Guccifer 2.0 allegedly communicated with "U.S. persons about the release of stolen documents".
Rosenstein, who said he had briefed President Donald Trump on the indictment, said there was no allegation that the hacking altered any vote count or that any Americans were knowingly in communication with any of the Russian officers. The president also has said the interference took place and vowed that if it returned in the 2018 midterm election - as USA intelligence officials have warned it may - he would "counteract it very strongly".
Mr Rosenstein said there were no allegations that USA citizens were involved in the alleged crimes.
The charges are part of the ongoing special counsel probe into potential coordination between the Trump campaign and Russian Federation.
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No, I don't know him well enough, but the couple of times I've gotten to meet him we got on very well. It was a little tough for a little while".
"We do have a - a political problem where - you know in the United States we have this stupidity going on". House Republicans have threatened to hold Rosenstein in contempt of Congress for what they say is the Justice Department's failure to comply in a timely manner with a subpoena for documents related to the Clinton email and Trump-Russia investigations.
The U.S. intelligence community has concluded, with further verification by the Senate intelligence committee, that Russia's active measures were aimed at hurting Clinton and helping Trump. "Pure stupidity", he said, referring to Mueller's probe.
The charges come just days before President Trump is set to meet with Russian President Vladimir Putin in Helsinki, Finland.
"The stakes for the upcoming Trump-Putin meeting could not be higher", Pelosi said. Trump has said he believes Putin's denials that Russian Federation did not meddle in the election.