South Korean President Moon Jae-in will meet with the sister of North Korean leader Kim Jong Un later this week.
Presidential spokesman Kim Eui-kyeom says Moon will have lunch on Saturday with North Korea's delegation to the PyeongChang Winter Olympics, whose members include Kim Yo Jong, a senior member of the North's ruling Workers' Party and a key advisor to her brother, and Kim Yong Nam, the regime's ceremonial head of state.
Kim Yo Jong will be the first member of the North's longtime ruling family to visit the South since the end of the 1950-53 Korean War.
Saturday's lunch will cap a recent round of diplomatic overtures between the bitter rivals sparked by President Moon's acceptance of North Korean leader Kim Jong Un's surprise offer to send his country's athletes to the PyeongChang Olympics during a New Year's Day speech.
The large North Korean delegation will arrive in Seoul Friday in time to attend the Games' opening ceremony that night.