An American national has crossed into North Korea without authorization and has been detained

The U.N. Command says an American national has crossed the border from South Korea into North Korea. The U.S.-led body that oversees the area tweeted Tuesday that the U.S. citizen was on a tour to the border village of Panmunjom and crossed the border into the North without authorization. It says he is currently in North Korean custody and that the U.N. Command is working with its North Korean counterparts to resolve the incident. It gave no further details. Cases of Americans or South Koreans defecting to North Korea are rare, though more than 30,000 North Koreans have fled to South Korea to avoid political oppression and economic difficulties since the end of the 1950-53 Korean War.