Russian President Vladimir Putin insisted on Wednesday his country was not involved in an effort to influence the U.S. presidential election even as WikiLeaks released another trove of internal documents from Hillary Clinton's campaign.

Last week, the U.S. government formally accused Russia of launching a hacking campaign to "interfere with the U.S. election process."

Clinton's campaign, which has charged the Kremlin is trying to help Republican Donald Trump win the White House on Nov. 8, took its allegations a step further on Tuesday when John Podesta, chairman of the Democratic nominee's campaign, accused the Trump campaign of colluding with Russia.