This undated picture released by North Korea's official Korean Central News Agency (KCNA) on September 3, 2017 shows North Korean leader Kim Jong-Un (C) looking at a metal casing with two bulges at an undisclosed location. STR/AFP/Getty Images

Quake in North Korea Signals Potential New Nuclear Test

Sep 03, 2017

(SEOUL) — South Korea's Joint Chiefs of Staff says a magnitude 5.6 quake in North Korea was artificial and it's analyzing whether the North conducted a nuclear test.

It says it detected a seismic wave from 12:34 p.m. to 12:36 p.m. around Punggyeri, North Korea.

The quake came just hours after North Korea claimed that its leader has inspected the loading of a hydrogen bomb into a new intercontinental ballistic missile.

All products and services featured are based solely on editorial selection. TIME may receive compensation for some links to products and services on this website.