North Korea has hailed late leader Kim Jong-il's son, Kim Jong-un, as "supreme leader of the party, state and army".
Mr Kim took centre stage at a memorial service in Pyongyang's main square a day after his father's funeral.
Kim Yong-nam, formally the number two leader, told a million-strong crowd their sorrow would be turned into strength "1000 times greater under the leadership of comrade Kim Jong-un".
State TV showed Kim Jong-un surrounded by top government and army officials.
The BBC reports that the memorial event appeared to be the Kim dynasty's unofficial handover of power.
A three-minute silence was also held, after which trains and ships throughout the country sounded their horns.
Kim Jong-il died of a heart attack on 17 December, aged 69, state media said. He had ruled North Korea since the death of his father Kim Il-sung in 1994.
On Wednesday, thousands stood weeping and wailing in the snow as Kim Jong-il's funeral cortege passed, images from state television showed.
Kim Jong-un stood impassively on a balcony above a portrait of his father, flanked by military commanders and senior members of the party.
Before him a vast concourse of the North Korean people. They filled Kim Il-sung square, hundreds of thousands, perhaps a million. Soldiers and civilians lined up in silent, arrow-straight rows.
Kim Jong-un was hailed as the "supreme leader" of the party, state and army, who has inherited the character and ideology of his father. He did not address the crowd himself.
