NEW YORK-- U.N. Secretary-General Antonio Guterres condemned North Korea's latest nuclear test Sunday, singling it out as the only country to break the norm against such explosions.

The condemnation came after North Korea claimed to have successfully tested an H-bomb that can fit into its intercontinental ballistic missile.

"This act is yet another serious breach of the DPRK's international obligations and undermines international non-proliferation and disarmament efforts," Guterres said in a statement, using the acronym of the North's official name, Democratic People's Republic of Korea.

"The DPRK is the only country that continues to break the norm against nuclear test explosions," he added.

North Korea is subject to multiple sets of U.N. Security Council sanctions for its banned nuclear and ballistic missile activities.

Guterres called the latest detonation a "profoundly destabilizing" act for regional security and demanded Pyongyang stop its provocations and comply fully with its international obligations.

Source: Yonhap News Agency