Quake not from nuke

AN undersea earthquake off the coast of North Korea was not caused by a nuclear test, South Korea’s media reported yesterday.

The 5.9 magnitude quake struck about 190km south east of the reclusive state’s third largest city, Chongjin, in the early hours of yesterday, according to the United States Geological Survey.

North Korea has staged five nuclear tests. But the quake, which did not trigger a tsunami warning, was not caused by a nuclear test, Yonhap news agency reported a USGS geophysicist as saying.