SEOUL, South Korea -- North Korea has detained a US citizen on suspicion of acts against the Pyongyang regime, the state-run Korean Central News Agency reported Sunday.
The regime described Kim Hak-song as "a man who was doing business in relation to the operation of Pyongyang University of Science and Technology."
KCNA said the American was detained Saturday, but did not release more details on his alleged crime.
"The relevant authority is currently carrying out a detailed investigation into the crime of Kim Hak-song," the state-run news agency said.
Kim Hak-song is believed to be the fourth US citizen currently detained in North Korea.
In April, KCNA said Tony Kim -- also known as Kim Sang Duk -- was detained for "hostile acts" toward the North Korean regime.
Otto Warmbier, a University of Virginia student, was sentenced to 15 years of hard labor in 2016 for removing a political sign.
And Kim Dong Chul, the president of a company involved in international trade and hotel services, was arrested in 2015 and is serving 10 years on espionage charges.