The FBI raided the offices of President Donald Trump’s personal attorney, Michael Cohen, on Monday, according to a statement by Cohen’s own attorney, McDermott Will & Emery partner Stephen Ryan.

According to the statement posted on the firm’s website, the FBI seized privileged communications between Cohen and “his clients” on behalf of the U.S. Attorney’s Office for the Southern District of New York, Ryan said. The move was taken, in part, through a referral by the Office of Special Counsel, Robert Mueller, according to Ryan.