A 2.3 magnitude earthquake hit near North Korea's nuclear testing site on 14 February. According to South Korea's state weather agency, it occurred about 36 kilometers north-northwest of Kilju, North Hamgyong Province.
The quake, occurring at a depth of 22 km, is the second one in recent days to hit the region, with a 3.1 magnitude natural earthquake striking the area on February 11.
Kilju is where North Korea's Punggye-ri nuclear testing site is located and since the beginning of this year, the Korean Peninsula has recorded seven earthquakes (magnitude 2 or higher).
Since 1978, more than 20 earthquakes have occurred in the area near Kilju, with the strongest being a magnitude 3.2, which was recorded in September 2017.