South Korea's top nuclear envoy said Friday that he had told his North Korean counterpart that it was important for Pyongyang to address the highly enriched uranium, or HEU, issue.

At a forum in Seoul organized by the Korea Press Foundation, chief negotiator Chun Yung-woo said he had told North Korean Vice Foreign Minister Kim Kye-kwan that the February 13 agreement on initial steps toward Pyongyang’s denuclearization included both its plutonium and its suspected HEU program.

He also said he had urged Pyongyang to leave no suspicions about the issue.

Chun dismissed speculation that foreign ministers of the six-party talks countries would meet in Pyongyang, saying that the meeting should be held in China, the host of the nuclear talks, although nothing has been set.

He also noted that the U.S. would partially lift sanctions on North Korean accounts at a Macao bank within 30 days of the conclusion of the six-party agreement in Beijing, not from the U.S.-North Korea dialogue in Berlin last month.