North Korea Denies Responsibility for Landmine Blasts That Injured Three South Korean Soldiers

VoS NEWS DESK | ASIA-PACIFIC | 30 SEPTEMBER 2026

The explosions occurred on 21 September near the military demarcation line in the western section of the DMZ. Three South Korean military personnel were injured in two separate blasts while South Korean forces were working in an area used for border operations.

South Korea's Joint Chiefs of Staff, working with the US-led United Nations Command, conducted inspections of the area and concluded that the evidence pointed towards North Korean mines. Investigators reportedly found blast marks, debris and TNT residue, while another North Korean mine was discovered during a subsequent inspection.

North Korea has strongly rejected the accusation.

Kim Yo Jong, the sister of North Korean leader Kim Jong Un and a senior figure in Pyongyang's foreign-policy structure, dismissed Seoul's assessment and accused South Korea of using the incident as a pretext for military provocation. She also warned of retaliation if South Korean forces attack North Korean troops involved in border fortification work.

South Korea has demanded that North Korea take responsibility if the findings are confirmed. Seoul has also warned that it could consider unspecified measures in response.

The United Nations Command has said the evidence indicates a violation of the armistice agreement that ended active fighting in the Korean War in 1953. The Korean Peninsula technically remains under an armistice rather than a formal peace treaty.

The incident comes at a particularly sensitive time for inter-Korean relations. North Korea has been strengthening its border defences, including minefields and other military structures, while relations between Pyongyang and Seoul have deteriorated.

South Korean authorities have expressed concern over the growing presence of North Korean troops and the construction of additional defensive structures near the border. North Korea, for its part, has portrayed its military measures as part of its national defence and response to what it considers hostile activity by South Korea and its allies.

The DMZ remains one of the most heavily fortified areas in the world. Large numbers of mines remain in the wider border region as a legacy of the Korean War, making military and engineering activity around the area particularly hazardous.

The latest incident also demonstrates the difficulty of establishing responsibility in a heavily militarised border environment. South Korean and UN investigators have presented evidence supporting their assessment, while North Korea has rejected the findings and accused Seoul of deliberately creating tension.

The dispute could therefore have wider implications if either side takes additional military measures.

South Korean officials have urged North Korea to stop border activities that could further increase tensions. Pyongyang has warned that any attack on its troops could lead to retaliation.

International attention is likely to remain focused on the Korean Peninsula as both governments continue to strengthen their military positions and diplomatic relations remain limited.

VoS STRATEGIC INSIGHT

The landmine dispute highlights the fragile security environment along the Korean DMZ. South Korea and the United Nations Command have attributed the explosions to North Korean mines based on their investigation, while Pyongyang rejects that assessment. The immediate concern is whether the incident remains a contained border dispute or contributes to further military escalation between the two Koreas.

Source: Associated Press; Reuters; United Nations Command; South Korean Joint Chiefs of Staff.