North Korea says it detained a fourth US citizen

North Korea confirmed a fourth United States citizen was detained, according to the state-run news service KCNA. Kim Hak Song was held after being accused of committing hostile acts against the country. The news agency announced that the government is now launching an investigation into his crimes. Hak Song worked at the Pyongyang University of Science and Technology, the same workplace as another American Kim Sang Dok, who was also detained.