North Korea said Friday it had detained a US student for carrying out a "hostile act" against the state, official media reported.
Otto Frederick Warmbier, a student at the University of Virginia, was arrested "while perpetrating a hostile act against the DPRK [Democratic People's Republic of Korea]," read a report from Pyongyang's state-run KCNA news agency.
It accused him of entering the country "for the purpose of bringing down the foundation of its [North Korea's] single-minded unity."
The report did not give details of the hostile act that Warmbier allegedly committed.
Warmbier entered North Korea with the knowledge of the US government, the report said, adding that he was under investigation.
A tour company that operates in North Korea, Young Pioneer Tours, issued a statement saying that Warmbier was a client.
"We can confirm that the reports that one of our clients is being detained in Pyongyang are true," the tour group said.