President Donald Trump‘s administration is investigating the emails of dozens of current and former senior State Department officials who sent emails to then-Secretary of State Hillary Clinton‘s private email, The Washington Post reported Saturday.

Current and former officials tell the Post that as many as 130 officials have been contacted in recent weeks by investigators at the State Department. Those targeted, including senior officials as well as others in lower-level jobs, have been notified that emails they sent years ago have been retroactively classified and now are potential security violations, according to letters reviewed by the Washington Post.