North Korea kidnaps and executes defectors with South Korean nationality...

A group of North Korean defectors based in South Korea says that North Korea abducted and then executed North Korean defector-turned-South Korean nationals in China. Citing an unidentified internal North Korean source, the group, called the North Korea Intellectuals Solidarity, says that around 15 North Korean defectors who obtained South Korean nationality were caught by the North in the North Korean-Chinese border area last year alone. The defector-turned-South Koreans were abducted in a joint operation conducted by North Korea's State Security Department, its military intelligence agency and border guards. The North Korean Intellectuals Solidarity says that most of them have been executed or detained at North Korean concentration camps in Hoeryong and Yodok.
(KBS World Radio, 2012-03-14)