North Korea appears to have conducted another nuclear test, the South Korean government said Sunday after seismic authorities detected an artificial natural disaster near Pyongyang regime's known nuclear test site.
North Korea, which carries out its nuclear and missile programmes in defiance of UN Security Council resolutions and sanctions, "recently succeeded" in making a more advanced hydrogen bomb that will be loaded on to an ICBM, KCNA said.
The United States Geological Survey (USGS) detected a 6.3-magnitude tremor in the northwestern part of North Korea, not far from the area in which they've performed previous nuclear tests.
South Korean President Moon Jae-in and Japanese Prime Minister Shinzo Abe called emergency meetings of their national security councils after the test, which is outlawed by United Nations sanctions.
South Korea's weather agency says the apparent detonation set off a magnitude 5.7 natural disaster, making the blast five to six times stronger than the North's fifth test in September 2016.
The previous nuclear blast in North Korea is estimated by experts to have been around 10 kilotons.
In July, North Korea tested two ICBMs, which analysts say could put much of the USA mainland within range, including Los Angeles and Chicago.
State-run media in North Korea says North Korean leader Kim Jong Un "watched an H-bomb to be loaded into new ICBM".
The North's 2016 test, when it claimed to have carried out a fusion reaction, was largely dismissed by global observers because of the relatively small size of the seismic wave.
The UN has banned North Korea from developing nuclear weapons and imposed sanctions after past tests. The claims have not been verified independently.
Canada grows at best pace in almost 6 years in second quarter
Consumer spending have played their traditional role as the locomotive accelerating to 3.3 % from 1.9% in the previous quarter. During last year's presidential campaign, Trump repeatedly attacked the Obama administration's economic record.
Just before the test, according to state media, Kim and the other senior leaders at the party presidium meeting discussed "detailed ways and measures for containing the USA and other hostile forces' vicious moves for sanctions". "We will convene a National Security council meeting to gather and analyse the information", CNN quoted Abe as saying. Two intercontinental missile tests in July had a range of about 10-thousand kilometers, which could potentially hit the mainland U.S. Song Ji-sun, Arirang News.
Kim reportedly said that North Korea can now produce as many powerful nuclear weapons as it wants.
"North Korea has a choice. None of us should be shocked by Pyongyang's latest actions".
The North followed its two tests of Hwasong-14 ICBMs by announcing a plan to launch a salvo of intermediate range missiles toward the U.S. Pacific island territory of Guam.
The North claimed the device it tested was a thermonuclear weapon - commonly called an H-bomb.
The country tested two nuclear weapons a year ago, including one in September close to the country's Foundation Day holiday.
Can North Korea deliver a nuclear warhead?
On Tuesday, the North fired a mid-range ballistic missile that flew over Japan, a test considered one of the most provocative ever from the reclusive state.
A long line of US presidents has failed to check North Korea's persistent pursuit of missiles and nuclear weapons.
The North said in its statement Sunday that its H-bomb "is a multi-functional thermonuclear nuke with great destructive power which can be detonated even at high altitudes for super-powerful EMP (electromagnetic pulse) attack according to strategic goals".