A North Korean education expert for UNESCO will no longer speak at a major South Korean peace forum this week after the U.N. organization replaced him with another official for a panel discussion on the future of education.

Chang Gwang Chol, UNESCO headquarters’ chief of education policy and a former official in North Korea’s education ministry, will not deliver a speech at the three-day Jeju Forum for Peace and Prosperity starting June 24, a forum organizer told NK News on Tuesday. 

Chang was replaced with Le Thu Huong, a program specialist in the education policy section at the