North Korea detained an unidentified US citizen for unknown reasons as he was planning to fly out of Pyongyang International Airport on Saturday morning.
The detention was confirmed by Martina Aberg, deputy chief of mission at the Swedish Embassy in Pyongyang.
The embassy represents US interests in North Korea, since Washington and Pyongyang do not have direct diplomatic relations.
Aberg told CNN that he was prevented from getting on the flight out of Pyongyang.
The US State Department has said it was working on the case.
At least two other US citizens are known to be in North Korean custody.
Source: CNN
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