University confirms US citizen detained amid tensionAFP.
Kim Sang-duk, or Tony Kim, was arrested at the capital's airport as he was about to leave after teaching at the Pyongyang University of Science and Technology or PUST for several weeks, the university said. The reason for Kim's arrest was unclear but was "not connected in any way with the work of PUST", the university said in a statement.
Two other US citizens – college student Otto Warmbier and Korean-American pastor Kim Dong Chul – are currently being held in the North after being sentenced to long prison terms. The pastor was sentenced last year to 10 years of hard labour for spying. Warmbier was sentenced to 15 years in 2016 for stealing propaganda material and for "crimes against the state".
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