Jerome Corsi—the right-wing conspiracy theorist and Roger Stone associate—filed a lawsuit Sunday accusing special counsel Robert Mueller of blackmailing him to lie about President Trump in the investigation of Russian interference in the 2016 presidential election. The suit seeks $350 million in damages and was filed six days after Corsi entered a formal complaint with the Justice Department alleging misconduct by Mueller. Corsi, 72, accuses Mueller's office of illegally leaking information from the grand jury investigating Russian election interference. The suit also accuses the special counsel's office of threatening Corsi with prison unless he agreed to falsely testify that he served as a liaison between Julian Assange and Stone. Corsi is known to have sent an email alerting Stone that WikiLeaks planned to release damaging information about emails stolen from John Podesta, chairman of Hillary Clinton’s presidential campaign, two months before WikiLeaks actually did so. He claims he never had any direct knowledge of WikiLeaks’ plans, saying he managed to predict the email dump using his investigative skills.