Eric Schmidt, the chief executive of Alphabet, Google's parent company, is working directly with Hillary Clinton's presidential campaign, according to a memo contained within an email released by WikiLeaks.

"Discreet conversations" of forming "working relationships" with companies such as Facebook and Apple were also facilitated as early as October 2014, the memo stated. This is at least six months prior to when Clinton announced her candidacy for president.

The document was attached to an Oct. 26, 2014 email sent from Robby Mook, now Clinton's campaign manager, to Cheryl Mills, a longtime Clinton aide; David Plouffe, Barack Obama's previous campaign manager; and John Podesta, Clinton's current campaign chairman whose email account was compromised.