South Korea's military has unleashed around 20 warning shots in the direction of North Korean border guards in the Demilitarized Zone (DMZ) who were pursuing a defector, Yonhap reports. Earlier Thursday, a "low-ranking" North Korean soldier fled across the border, appearing in front of a guard post on the "mid-western front" at around 8:04am local time, the Joint Chiefs of Staff (JCS) said. This is the fourth such defection this year.