'Suspected Explosion' Detected In North Korea Sends Analysts Scrambling To Determine Cause

A magnitude 3.4 earthquake in North Korea has sent analysts scrambling to determine if it was the result of another nuclear test or a natural event.
China’s earthquake administration said on Saturday it was a “suspected explosion” but an official at South Korea’s meteorological agency said the initial view was that it was a natural quake.
“We use several methods to tell whether earthquakes are natural or manmade,” said the official, who asked for anonymity. &l