North Korea arrested a South Korean national and New Jersey resident for “illegally entering the DPRK,” the Korea Central News Agency (KCNA) announced on Saturday.

Won Moon-joo, aged 21 and a current student at New York University (NYU), was arrested after “crossing the Amnok River from Dandong, China on April 22,” the KCNA said.

Won admitted that his “illegal entry was a serious violation of the law of the DPRK,” the brief report added, adding no further details about the circumstances of his arrest.

NYU confirmed on Saturday that Won was a junior at the Stern School of Business, but