Three South Korean military officers were injured in an explosion during an operation within the Demilitarized Zone (DMZ) along the border with North Korea, South Korean officials reported on Sunday. The incident took place south of the Military Demarcation Line (MDL), inside the DMZ, a heavily fortified buffer zone that separates the two Koreas.
According to a statement from South Korea’s Joint Chiefs of Staff (JCS) and the Defence Ministry, the cause of the explosion remains unclear. It has not been determined whether the blast originated from a North Korean mine, a South Korean mine, or another type of explosive device. The three officers were conducting an operation when they were injured; two were evacuated by helicopter, while the third was initially transported by road before being airlifted. The injured personnel are currently receiving treatment at a military hospital near Seoul, although details on the severity of their injuries have not been disclosed.
The DMZ stretches approximately 248 kilometers (154 miles) long and 4 kilometers (2.5 miles) wide, established after the Korean War armistice in 1953. Despite its designation as a demilitarized zone, the area remains one of the most heavily mined and militarized borders in the world. An estimated 800,000 to two million landmines lie buried throughout the zone and its surrounding areas, with many dating back to the original conflict, though additional mines and fortifications have been installed in recent years.
Tensions on the Korean Peninsula have escalated since 2024, when North Korean leader Kim Jong-un declared South Korea as the “principal enemy.” In response, Pyongyang has intensified its military presence along the border, laying mines and constructing anti-tank barriers with the apparent aim of permanently sealing the frontier. Previous incidents involving mines in the DMZ have occasionally resulted in casualties. Notably, mines have sometimes been displaced by natural events such as floods, causing injuries and fatalities among civilians in South Korea.
This latest explosion adds to a history of periodic flare-ups along the border, including previous mine blasts injuring South Korean soldiers and heightening inter-Korean tensions. South Korean military officials have yet to release further information as investigations into the cause of this incident continue.