Source: BBC (Youtube) North Korean leader Kim Jong-il has died at the age of 69, state-run television has announced. Mr Kim, who has led the communist nation since the death of his father in 1994, died on a train while visiting an area outside the capital, the announcement said. He suffered a stroke in 2008 and was absent from public view for months. His designated successor is believed to be his third son, Kim Jong-un, who is thought to be in his late 20s. North Korea's state-run news agency, KCNA, urged people to unite behind the younger Kim. "All party members, military men and the public should faithfully follow the leadership of comrade Kim Jong-un and protect and further strengthen the unified front of the party, military and the public," the news agency said. A funeral for Kim Jong-il will be held in Pyongyang on 28 December and Kim Jong-un will head the funeral committee, KCNA said. A period of national mourning has been declared from 17 to 29 December.