(CNN) Roger Stone appeared on the InfoWars radio show the same day he sent an email claiming he dined with WikiLeaks founder Julian Assange -- and he predicted "devastating" upcoming disclosures about the Clinton Foundation.

Stone's comments in his August 4, 2016, appearance are the earliest known time he claimed to know of forthcoming WikiLeaks documents. A CNN KFile timeline shows that on August 10, 2016, Stone claimed to have "actually communicated with Julian Assange."

The comments also raise more questions about what Stone knew about WikiLeaks and about the veracity of his claims to have been in contact with Assange, which he now denies.

On the August 4, 2016, InfoWars show, Stone described the soon-to-appear WikiLeaks disclosures. He also mentioned that he spoke with then-Republican nominee Donald Trump on August 3 -- the day before the interview. InfoWars is a fringe media outlet run by Alex Jones, who is known for spreading conspiracy theories.

Stone wrote to former Trump adviser Sam Nunberg on August 4, 2016, that he had dinner with Assange the night before, according to a source familiar with the email exchange. The email was first reported by the Wall Street Journal on Monday . The Journal also reported that special counsel Robert Mueller is examining the exchange.

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