The South Korean Unification Ministry also reviewed the landmark visit by the high-level DPRK delegation, which wrapped up on Sunday.
Before leaving, the DPRK leader's sister, Kim Yo Jong, joined South Korean President Moon Jae-in at a concert in Seoul. The performance was by a DPRK art troupe, led by the head of the popular Moranbong band.
The trip saw Kim Yo Jong and the country's top legislator, Kim Yong Nam, sit among world leaders at the Olympics, and deliver hopes for a summit with President Moon. The DPRK's state-run KRT reports the country's delegation held "frank and candid" talks with the South Korean president.