The former British intelligence agent behind an unsubstantiated dossier about Donald Trump’s activities and connections in Russia has gone into hiding. Christopher Steele left his home south of London on Wednesday, after The Wall Street Journal identified him as the author of the 35-page memo alleging Russia’s government has compromising information that it could use to blackmail the president-elect. The memo was published by BuzzFeed on Tuesday, prompting outrage from Donald Trump and criticism from journalists who say the claims cannot be verified. The British newspaper The Telegraph quotes a friend of Steele saying the former MI6 spy is “terrified for his and his family’s safety.”