Story highlights Sources tell CNN the North Koreans may invite Moon to Pyongyang

The invitation could be made at the lunch meeting on Saturday

Seoul (CNN) There is a "good chance" Kim Yo Jong, the sister of North Korean leader Kim Jong Un, will invite South Korean President Moon Jae-in to visit Pyongyang "sometime this year," diplomatic sources say.

While the sources say "nothing is final," a visit by Moon to North Korea would be the first time a South Korean President has stepped foot in the country since 2007.

A potential date could be August 15, the day Korea was liberated from Japanese occupation in 1945, a holiday marked by both Koreas.

The invitation for Moon to go north could be made at a scheduled welcome luncheon on Saturday, several diplomatic sources with deep knowledge of North Korea's intentions told CNN.

South Korea's presidential spokesman confirmed Friday that Moon plans to meet Kim Yo Jong and three other high-level delegates on the sidelines of the Winter Olympics Saturday.

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