Kim Jong Un made stern assessment saying that it was a serious accident and criminal act caused by absolute carelessness, irresponsibility and unscientific empiricism which is out of the bounds of possibility and could not be tolerated,

North Korea began a full-scale investigation into an accident that damaged a new warship at its launch ceremony this week, state-run media reported Friday, with investigators vowing to punish those responsible.

North Korea fired multiple cruise missiles into the East Sea on the morning of May 22, just hours after state-run media publicly acknowledged the failed launch of a new 5,000-ton-class destroyer at Chongjin Port a day earlier.