U.S. District Judge Amy Berman Jackson imposed a limited gag order on GOP operative Roger Stone on Friday, banning him and the attorneys in the case from making any statements "that pose a substantial likelihood of material prejudice to this case." Stone, who was arrested last month as part of Special Counsel Robert Mueller's investigation, pleaded not guilty to charges of witness tampering, lying to Congress, and obstruction. The gag order says he cannot make comments "within the vicinity of the courthouse" and he is barred from communicating with witnesses. Jackson warned Stone earlier this month to stop acting like he's on "a book tour" as his case goes forward. The longtime adviser to President Trump made several media appearance after his arrest, criticizing Mueller's investigation.

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