Tony Kim was detained in North Korea
Tony Kim, also known as Kim Sang Duk, is being held in North Korea after being accused of carrying out "hostile acts", Korean Central News Agency has said.
The American citizen's detention comes as tensions between North Korea and the US are reaching an all-time high.
On Monday the US revealed its Terminal High Altitude Area Defence (THAAD) missile defence system is now operational from a disused golf course in southern South Korea to stop nuclear missiles from hitting the South.
Mr Kim is a Korean-American former professor at the Yabian University of Science and Technology (YUST( in the northeastern Chinese city of Yanji, near the Chinese border with North Korea.
He had just completed a one-month stint as a guest lecturer in international finance and management at the Pyongyang University of Science and Technology (PUST), a sister insistution of YUST, according to Park Chan-mo, chancellor of PUST.
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