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,

In a rare public admission of failure, North Korean leader Kim Jong Un described the accident involving the 5,000-ton destroyer as a “criminal act.”

North Korea suffered a “serious accident” during the launch ceremony for a new destroyer, an event that was overseen by leader Kim Jong Un, the state-run Korean Central News Agency said.The incident occurred Wednesday due to “inexperienced command and operational carelessness” resulting in some sections of the warship’s keel being destroyed,