SEOUL, South Korea — North Korea said on Thursday that a high-ranking official, who many in the South believe orchestrated a deadly attack in 2010, would lead a delegation to Sunday’s Winter Olympics closing ceremony in the South, another sign the two Koreas are trying to work out a road map toward improving ties.

The North’s delegation will be led by Kim Yong-chol, a vice chairman of the ruling Workers’ Party’s Central Committee. The eight-member delegation will start a three-day trip on Sunday that will include attending the closing ceremony in Pyeongchang, South Korean officials said.

Mr. Kim’s trip follows another recent visit to the South by senior North Korean officials. Earlier this month, Kim Yo-jong, the sister of North Korea’s leader, Kim Jong-un, attended the Games’ opening ceremony and met with President Moon Jae-in of South Korea. In that meeting she invited Mr. Moon to a summit meeting in the North on behalf of her brother.

Also scheduled to attend Sunday’s closing ceremony is President Trump’s daughter, Ivanka Trump, who will lead the American delegation. United States officials said Ms. Trump had no plans to meet anyone representing the North.