The U.S. Department of Justice on Monday charged a federal contractor with sending classified material to a news organization that sources identified to Reuters as The Intercept, marking one of the first concrete efforts by the Trump administration to crack down on leaks to the media.

Reality Leigh Winner, 25, was charged with removing classified material from a government facility located in Georgia. She was arrested on June 3, the Justice Department said.

The charges were announced less than an hour after The Intercept published a top-secret document from the U.S. National Security Agency that described Russian efforts to launch cyberattacks on at least one U.S. voting software supplier and send spear-phising emails to more than 100 local election officials days before the presidential election last November.