A U.S. student has been detained in North Korea, the state-run Korean Central News Agency (KCNA) said on Friday, making him the third American to be arrested there this year.

“According to information available from a relevant institution, Warmbier Otto Frederick, student of Virginia University of the U.S., was arrested while perpetrating a hostile act against the DPRK,” the KCNA report said.

The student, who had entered North Korea “under the guise” of tourism, had the “purpose of bringing down the foundation of (the DPRK’s) single-minded unity at the tacit connivance of the U.S. government and under its manipulation,” the KCNA said.

The U.S. embassy in Seoul