SEOUL-- The top nuclear envoys from South Korea, the United States and Japan have agreed to take the strongest possible punitive measures in reaction to North Korea's latest nuclear test during their telephone discussions, the foreign ministry here said Monday.

Kim Hong-kyun, special representative for Korean Peninsula peace and security affairs at the Ministry of Foreign Affairs, held respective telephone talks with his American and Japanese counterparts, Joseph Yun and Kenji Kanasugi, on Sunday to discuss countermeasures to the sixth nuclear test, the ministry said.

The top envoys strongly condemned the nuclear detonation and agreed to take a stern response, including a new United Nations Security Council resolution with "the strongest sanctions elements" possible, through their trilateral cooperation, according to the ministry.

Source: Yonhap News Agency