Special Counsel Robert Mueller is probing whether former Trump adviser Roger Stone tried to intimidate a witness who contradicted Stone's account of his relationship with Wikileaks, the Wall Street Journal reported. Stone had previously said he was in contact with Wikileaks during the 2016 presidential campaign, but he has since claimed he was exaggerating. He has also said most of what he knew about Wikileaks he learned from radio personality Randy Credico, an assertion Credico has disputed. An irate Stone threatened Credico in emails to "sue the f--" out of him, saying he was a "loser a liar and a rat," the Journal reported. Wikileaks released purloined Democratic emails in 2016 that damaged Hillary Clinton politically.