happened at the pyongyang airport and now an american citizen is in custody. this airport is one of the only ways in and out of north korea, just a handful of flights pass through on any given week. it was here that north korean authorities detained a man over the weekend as he was trying to board a flight out of the country. the man had just finished teaching at the pyongyang university of science and technology, a private institution where foreign professors, including americans, teach north korean students. the university says we understand this detention is related to an investigation into matters not connected in any way with the work of the university. details of that investigation or any charges against kim remain a mystery. so far north korea has stayed silent. complicating matters, washington does not have diplomatic relations with pyongyang. all communications go through the swedish embassy, which