Former Trump campaign aide expected to plead guilty in Russia probe: reports
FILE PHOTO: Rick Gates, former campaign aide to U.S. President Donald Trump, departs after a bond hearing at U.S. District Court in Washington, U.S., December 11, 2017. REUTERS/Joshua Roberts/File Photo

Rick Gates, a former adviser to Donald Trump's 2016 U.S. presidential campaign, was expected to plead guilty as soon as Friday in Special Counsel Robert Mueller's Russia probe, the New York Times and ABC News reported, citing people familiar with the matter.

Gates' expected plea is a sign he will likely cooperate in Mueller's investigation into whether Trump's campaign colluded with Russia in Moscow's alleged election meddling. Mueller filed new criminal charges against former Trump aides Gates and Paul Manafort on Thursday, stepping up pressure in a legal battle that started last year.

(Reporting by Doina Chiacu; Editing by Frances Kerry)