South Korean Defense Minister Kang Shin-chul said on Monday that “appropriate, substantial and corresponding” measures would be taken if the explosion inside the Demilitarized Zone (DMZ) is confirmed to have been caused by land mines planted by North Korea.

Two South Korean soldiers were severely wounded and a third suffered minor injuries, according to Yonhap. Brig. Gen. Hwang Ju-bong, chief of the ground operations division of the Joint Chiefs of Staff, said at a regular press briefing that the command received testimony that what the troops saw was similar to a wooden-box land mine.