Roger Stone, longtime associate and unofficial advisor of President Donald Trump, said on NBC’s Meet the Press that he is prepared for an indictment from special counsel Robert Mueller, though he believes it would be “an effort to silence [him].”

Although Stone said neither he nor his lawyer have had contact with Mueller’s office, the recent subpoenas of two of his associates may indicate that he is a person of interest. Jason Sullivan, Stone’s former social media advisor, and John Kakanis, who has worked as Stone’s driver, accountant and operative, were both issued subpoenas last week by the special counsel.

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Stone said it is “not inconceivable that Mr. Mueller and his team may seek to conjure up some extraneous crime pertaining to my business” and that “no evidence whatsoever of Russian collusion” has been found. However, Stone has come under scrutiny not without reason. He has admitted to communicating with Guccifer 2.0, the Russian hacker or hackers the FBI holds accountable for leaking emails from the Democratic National Committee during the presidential campaign. He also admitted to communicating with Julian Assange, who was behind WikiLeaks publishing Hillary Clinton’s emails. Stone claims no prior knowledge of the emails leaking, but before one of the batches was released he had stated Assange would deliver a “devastating expose” of Clinton.

Kakanis is currently under investigation for these same reasons. According to Stone, a total of eight former colleagues have been “terrorized” by investigators, and he is ready to be next.