(AFP photo)SEOUL - A powerful 5.4-magnitude earthquake hit the southern region of South Korea Monday evening, the US Geological Survey (USGS) said, following an earlier quake of 4.9-magnitude. The Korea Meteorological Administration (KMA) put the second tremor higher than USGS, at 5.8-magnitude, describing it as the "biggest ever". Monday's second quake hit at around 8.30pm (6.30pm Thailand time), with the epicentre near the southeastern city of Gyeongju, the KMA said. On Friday USGS reported a 5.3-magnitude "artificial earthquake" in North Korea, that was in fact a nuclear test. Local nuclear reactors were operating without disruption, it said, citing officials at Korea Hydro & Nuclear Power.

Source: Bangkok Post September 12, 2016 13:41 UTC