TOKYO (AP) — North Korea announced it detonated a thermonuclear device Sunday in its sixth and most powerful nuclear test to date. The North called the test a “perfect success” while its neighbors condemned the blast immediately.
Though the precise strength of the blast has yet to be determined, the artificial earthquake it caused was several times stronger than tremors generated by its previous tests. It reportedly shook buildings in China and in Russia.
The test was carried out at 12:29 p.m. local time at the Punggye-ri site where North Korea has conducted nearly all of its past nuclear tests. Officials in Seoul put the magnitude at 5.7, while the U.S. Geological Survey said it was a magnitude 6.3.
North Korea’s state-run television broadcast a special bulletin Sunday afternoon to announce the test. It said leader Kim Jong Un attended a meeting of the ruling party’s presidium and signed the