Donald Trump confidante and infamous Republican trickster Roger Stone privately communicated with the same Russian hacking group that the U.S. intelligence officials insist was behind the email hackings during the presidential campaign.

The FBI is currently investigating Stone, who communicated with the Russian “hacktivist” known as Guccifer 2.0 through a private Twitter account.

Although Stone promoted Guccifer 2.0’s claim that it acted alone to “fight all those illuminati,” U.S. intelligence officials have “high confidence” that Russian officials operated the hacker’s Twitter, WordPress, and “burner” email accounts to communicate with certain individuals and the media.

Stone admitted that he has communicated with WikiLeaks founder Julian Assange and Guccifer 2.0, including exchanges on their public Twitter accounts.

In a series of combative tweets, Stone defended Trump’s accusation that former President Obama wire-tapped Trump’s campaign and he “never denied perfectly legal back channel to Assange who indeed had the goods on #CrookedHillary.”

Stone denied last week that he ever had “direct conversations” with Assange or that he knew that WikiLeaks planned on leaking hacked data.

When the Smoking gun asked Stone if he ever exchanged private messages with the Russian hacker Guccifer 2.0, he replied “don’t recall.”

Along with Stone, the FBI is also investigating other former members of Trump’s campaign team for contacts with Russian officails, including former campaign chairman Paul Manafort, former national security advisor Michael Flynn, and former advisor Carter Page.