Washington, August 5 (RHC)-- In the United States, the chief executive officer of the Democratic National Committee (DNC) has announced her resignation after an e-mail hack scandal that caused a rift in the party during the run-up to the 2016 U.S. presidential race. Amy Dacey said she would step-down along with two other top DNC staffers, including communications director, Luis Miranda, and chief financial officer, Brad Marshall.

The move was prompted after the huge leak of nearly 20,000 e-mails and messages, which proved that DNC officials plotted against Vermont Senator Bernie Sanders's presidential campaign.

On July 22, the whistle-blowing website Wikileaks published thousands of hacked e-mails obtained from the DNC’s servers, exposing an insider effort by DNC officials in favor of Democratic presidential nominee Hillary Clinton to undermine Sanders’ bid for the White House.

U.S. intelligence agencies claim they have “high confidence” that the Russian government was behind the hack. Russia has denied responsibility for hacking the e-mails of the committee and a computer network used by Hillary Clinton's campaign.

The FBI and other counter-intelligence agencies involved in the probe of the DNC hacking have not yet officially attributed the cyber attack to Russian government hackers.