North Korea wants the world to watch as it blows up its Punggye-ri nuclear test site, the country has said, announcing that it will hold a "ceremony" between May 23 and May 25, inviting foreign journalists to witness what it said would be a "transparent" event.

Skeptics, however, say Pyongyang may have ulterior motives for its announcement late Saturday, pointing to past demonstrations where it carried out similar spectacles to show its commitment to deals it later reneged on.

Leader Kim Jong Un had revealed the plans to shut down the nuclear test site during his summit with South Korean President Moon Jae-in last month, during which time the North Korean leader also pledged to work toward the "denuclearization of the Korean Peninsula."