The three detainees are being held responsible for the botched launch of a 5,000-ton destroyer, an accident that has drawn the dictator’s wrath.

Kim Jong Un said those who made "irresponsible errors" would be dealt with at a plenary meeting next month.

North Korea’s newest warship was severely damaged during a launch ceremony Wednesday, with leader Kim Jong Un, who witnessed the accident, saying it brought shame to the nation’s prestige and vowing to punish those found responsible,