Kim Jong Un and Seoul envoys discuss possible inter-Korean summit

The delegation from Seoul is the most senior to travel North for more than a decade, and comes as Moon tries to broker talks between nuclear-armed Pyongyang and Washington after months of high tensions.

The North's official news agency KCNA said Kim "warmly welcomed" the South Korean officials, who handed over a letter from Moon. Photos showed Kim in a jovial mood, smiling and shaking hands enthusiastically.

"Hearing the intention of President Moon Jae In for a summit from the special envoy of the south side, he exchanged views and made a satisfactory agreement," KCNA added.

But Seoul said no agreement had yet been reached on a meeting between Kim and Moon, which would be the first such summit since 2007.

"It's not an agreement, it's discussions," an official from the South's presidential Blue House told AFP, adding that the two sides had "somewhat shared the view" on other points.