The news comes as Kim Jong-un sent a letter to South Korean President Moon Jae-in on Sunday calling for more peace talks between the leaders in the new year following their active engagement in 2018, South Korea's presidential office said.
It was sent days before Kim delivers his annual New Year's Day speech, which will be examined for signs of whether the USA and North Korea will continue with their rapprochement or drift back toward confrontation.
Kim's letter has renewed hopes for inter-Korean relations in 2019 - ending weeks of lackluster communication between the two Koreas as the North's denuclearization talks with the USA have gone off the boil.
For Kim, working with South Korea has been a lot more productive than working with the US.
The letter was sent two days before leader Kim is expected to deliver his New Year's speech on Tuesday, which will be closely watched by the outside world for any clues as to the North's policy directions on denuclearization and inter-Korean relations.
"[Chairman Kim] redefined his standpoint in actively carrying out agreements in the inter-Korean summit as well as the US-DPRK summit", Moon wrote, continuing, "I welcome chairman Kim's intentions to meet several times in the new year to find solution for denuclearization and to solve practical problems in achieving peace and prosperity".
South Korean President Moon Jae In and North Korean leader Kim Jong-un raise their hands after signing a joint statement in 2018.
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On his visit to North Korea's capital, Mr Moon gave a speech at the Mass Games, saying the two countries should "become one" again.
Cheong Wa Dae spokesman Kim Eui-kyeom told reporters the North Korean leader expressed regret for not being able to make his visit to Seoul this year as he wished and agreed with Moon in Pyongyang.
Moon welcomed the latest message, saying the North's leader had also expressed "active intention to carry out agreements" made in his previous summits with the United States and the South, without elaborating further.
Leader Kim Jong-un declared an end to missile launches earlier this year after a crunch summit with US President Donald Trump in Singapore in June.
Kim also urged the North Korean people to strengthen their "self-reliance", a message that echoed Chinese President Xi Jinping's similar address Monday night.
Post-summit nuclear talks between Washington and Pyongyang quickly settled into a stalemate as the countries struggled between the sequencing of the North's disarmament and the removal of USA -led global sanctions against the North.