Kim Jong Il died on 19 December 2011 as reported by Korean Central Television. The presenter Ri Chun-hee announced that he had died on 17 December at 8:30 am of a massive heart attack while traveling by train to an area outside Pyongyang. Reportedly, he had received medical treatment for cardiac and cerebrovascular diseases, and during the trip, Kim was said to have had an "advanced acute myocardial infarction, complicated with a serious heart shock".
His son Kim Jong Un was announced as North Korea's next leader during the same newscast as "great successor to the revolutionary cause of Juche and outstanding leader of our party, army and people". The elder Kim's funeral was held on 28 December in Pyongyang, with a mourning period lasting until the following day.