The seismic site event detected on Sunday in the Democratic People's Republic of Korea (DPRK) is much larger than the previous ones detected, but it is still too early to tell if it is an H-bomb, the CTBTO's chief told reporters.
CTBTO refers to the Comprehensive Nuclear-Test-Ban Treaty Organization. The CTBTO is a Vienna-based organization under the CTBT, a multilateral treaty to ban all nuclear explosions in all environments.
CTBTO monitors possible nuclear explosions, a key aspect of nuclear non-proliferation. An IMS station detects radioactive particles and noble gases in the atmosphere, a technology that can confirm whether an explosion is indicative of a nuclear test, according to the CTBTO.
Lassina Zerbo, Executive Director of the preparatory commission for CTBTO, told reporters that CTBTO experts are analyzing the event detected.
A CTBTO spokesperson told Xinhua earlier that another smaller seismic was detected eight minutes after the first one, but CTBTO still need time to confirm the details of it.
Meanwhile, Director General of another Vienna-based body International Atomic Energy Agnecy Yukiya Amano slammed DPRK's latest nuclear test.
"Today's nuclear test by the Democratic People's Republic of Korea is an extremely regrettable act," Amano said in a statement.
"I strongly urge the DPRK to fully implement all relevant resolutions of the UN Security Council and the IAEA," he said.
DPRK on Sunday detonated a hydrogen bomb capable of being carried by an intercontinental ballistic missile (ICBM), official media announced.
The DPRK Central Television said the test was carried out at the order of top leader Kim Jong Un, who chaired a meeting of the standing committee of the political bureau of the Workers' Party of Korea on the Korean Peninsula situation and decided to conduct the H-bomb test.
The TV report showed still photos of the document signed by Kim ordering the test, which was the sixth nuclear test by the DPRK so far.