It is North Korean leader Kim Jong-un’s “fixed will” that a summit with US President Donald Trump in Singapore should go ahead, state media say.
This followed a surprise meeting on Saturday between Kim and South Korean President Moon Jae-in.
Trump had cancelled the June 12 summit citing North Korea’s “hostility” – but on Saturday he said things were “moving along very nicely”.
Meanwhile, US officials are reported to have travelled to the North on Sunday.
The American team, led by Sung Kim, a former ambassador to South Korea, was due to hold talks with North Korean Vice-Foreign Minister Choe Son-hui on preparations for the summit, US and South Korean media say.
The meeting would be the culmination of diplomatic efforts that began this year to try to defuse what had threatened to become a military confrontation between the nuclear-armed communist North and the South and its US ally.