(CNN) Roger Stone, an informal political adviser to President Donald Trump, downplayed his Friday indictment by a grand jury on charges brought by special counsel Robert Mueller as based on a "process crime" that doesn't show collusion with WikiLeaks or the Russian government.

"First of all, I always said that there could be some process crime," Stone told CNN's Chris Cuomo on "Cuomo Prime Time."

"There's still no evidence whatsoever that I had advance knowledge of the topic, the subject, or the source of the WikiLeaks disclosures. I never received any of the WikiLeaks disclosures. I never communicated with Assange or WikiLeaks other than the limited communication on Twitter on direct message, which I gave to the House Intelligence Committee last September, I guess it was."

Stone denied ever speaking to the President about WikiLeaks' release of Hillary Clinton campaign chairman John Podesta's hacked emails during the 2016 campaign.

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