Presidential national security advisor Kim Kwan-jin is hoping to visit the U.S., Cheong Wa Dae spokesman Min Kyung-wook said Sunday.
But Min said the visit is still being negotiated between Seoul and Washington.
Cheong Wa Dae sources said that the visit would involve in-depth talks with U.S. national security advisor Susan Rice over sanctions against North Korea following the sinking of the Navy corvette Cheonan.
The news comes ahead of North Korean Foreign Minister Ri Su-yong's visit to New York to attend the UN General Assembly on Sept. 24. It will be the first time in 15 years that a North Korean foreign minister has visited the UN.
There is speculation that he will meet with high-ranking U.S. officials on the sidelines.