US intelligence officials believe Russian President Vladimir Putin was most likely directly involved in the hacking campaign that targeted Democratic Party officials and organizations during the US presidential election, NBC News reportedTuesday.

Two of the unnamed intelligence officials cited by NBC News pointed to new evidence they say shows Putin directed the distribution of hacked emails and information from the Democratic Party and Hillary Clinton’s presidential campaign.

WikiLeaks regularly published leaked documents in the weeks leading up to Election Day. WikiLeaks and other organizations also published other communications embarrassing to Democrats and Clinton at various points during the campaign.

Putin’s goal, according to NBC News’ sources, was to undermine and discredit America as a global leader and hurt Clinton.