PYONGYANG, North Korea (AP) - A U.S. guided-missile submarine arrived in South Korea on Tuesday and envoys from the U.S., Japan and South Korea met in Tokyo, as North Korea marked the anniversary of the founding of its military. The State Department said it was aware of the report about a U.S. citizen being detained, but declined further comment “due to privacy considerations.”

Park said Kim had taught at the Yanbian University of Science and Technology in China before coming to Pyongyang. South Korea's Yonhap News Agency, citing unnamed sources, reported that a Korean-American man was arrested Friday at Pyongyang's airport while trying to leave It said the man, in his late 50s and identified by his surname, Kim, has been involved in aid and relief programs to and was a former professor at the Yanbian University of Science and Technology in China.South Korea's Unification Ministry and its intelligence agency both said they were unable to confirm the report.At least two other Americans are currently detained in Last year, Otto Warmbier, then a 21-year-old University of Virginia student from suburban Cincinnati, was sentenced to 15 years of hard labor in prison after he confessed to trying to steal a propaganda banner. North Korean authorities have reportedly detained a U.S. citizen, raising the total number of Americans known to be detained in North Korea to three and potentially deepening animosities between Washington and Pyongyang at an already-tense moment.
Yonhap reports that North Korea has detained a U.S. citizen as he sought to leave the country.