M 6.3 Explosion - 22km ENE of Sungjibaegam, North Korea

Possible explosion, located near the site where North Korea has detonated nuclear explosions in the past. If this event was an explosion, the USGS National Earthquake Information Center cannot determine its type, whether nuclear or any other possible type. The Air Force Technical Applications Center (AFTAC) is the sole organization in the federal government whose mission is to detect and report technical data from foreign nuclear explosions.