SEOUL, South Korea (AP) — South Korea says the sister of North Korean leader Kim Jong Un will be part of the high-level delegation coming to the South for the Pyeongchang Winter Olympics.

South Korea's Unification Ministry said North Korea informed it Wednesday that Kim Yo Jong would be part of the delegation led by the country's nominal head of state Kim Yong Nam.

Seoul previously said the delegation would arrive Friday.

Kim Yo Jong was promoted by her brother last year to a new post within the North's ruling party that analysts said showed that her activities are more substantive and more important than previously thought.