Key facts
- South Korea's military and the UN Command are jointly investigating a landmine explosion near the DMZ.
- Three South Korean soldiers were injured in the blast on September 21.
- The explosion occurred while soldiers were clearing a patrol route in the western sector of the DMZ.
- South Korean President Lee Jae Myung stated the explosion was caused by a landmine.
- Opposition lawmakers are calling for transparency and suspect the device may have originated from North Korea.
