UN Confirms North Korean Mines Violated Korean Armistice

The UN Command announced on September 30 that it had identified North Korean-made antipersonnel mines in the Demilitarized Zone south of the military demarcation line, concluding the incident violated the 1953 armistice agreement that ended active combat in the Korean War. Three South Korean soldiers were injured in two consecutive explosions on September 21 while conducting a patrol mission near the border in Gyeonggi Province. The blasts occurred approximately 10 meters south of the military demarcation line during an operation to establish a patrol route through a densely vegetated area.

South Korea's Joint Chiefs of Staff announced a preliminary assessment on September 29 that the blasts were caused by North Korean mines following a joint inspection with the UN Command. A follow-up inspection on September 29 discovered an additional North Korean antipersonnel mine. South Korean Defence Minister Kang Shin-chul characterized the blasts as a "clear" violation of the armistice and demanded an apology from North Korea, warning of "corresponding measures" if a complete investigation confirms North Korean responsibility. President Lee Jae Myung ordered a thorough investigation into the incident.

North Korea has denied responsibility for the landmine blasts. Kim Yo Jong, a senior official and sister of North Korean leader Kim Jong Un, issued a statement on September 29 rejecting South Korean findings as a "conspiratorial farce" and accused Seoul of fabricating "material evidence" to create a pretext for military provocation. She warned that North Korea would conduct "immediate and merciless retaliatory action" if South Korean forces fired upon North Korean troops conducting border fortification work, stating that "when a single bullet is hit on our land, they must be prepared for a lot." Kim Yo Jong characterized North Korea's border fortification efforts as a legitimate exercise of sovereignty and denied that North Korean soldiers had crossed the border.

South Korean military officials noted there was no record of South Korean or allied forces laying mines in the area. Kwon Dae-won, vice chairman of South Korea's Joint Chiefs of Staff, stated there was a "very high possibility" that North Korean mines caused the explosions, citing blast marks and forensic analysis. South Korea said the mines were believed to have been laid by Pyongyang as part of recent border fortification activities. The military called for North Korea to cease such fortification work and other actions that raise tensions.

The UN Command said it would address the alleged armistice violation through established mechanisms. In a statement, it reaffirmed its commitment to maintaining and enforcing the armistice agreement and preventing escalation on the Korean Peninsula. This incident follows a similar 2015 mine explosion that injured two South Korean soldiers, which Seoul also attributed to North Korea—a claim Pyongyang denied at that time.