Why did Kim Jong Un get angry and hang 30 of his officials?

Thirty officers hanged in North Korea : North Korean dictator Kim Jong Un is in the news again. He has hanged 30 senior officials of his country. Their only fault was that they could not save the country from the terrible flood, which infuriated North Korea’s Supreme Leader Kim Jong Un. This flood devastated many parts of Chagang province, in which more than 4000 people died. According to the report of South Korean news outlet Chosun TV, officials said that those who have caused the death of people will be given severe punishment. According to the report of Central News Agency KCNA, Kim Jong has asked to punish all those persons who could not fulfill their responsibilities properly in this disaster. Last month also 20-30 prominent persons of the party were killed. Kang Bong Hoon, the dismissed party secretary of Chagang province, has also been arrested.