How many South Korean soldiers were injured in the Sept. 21 DMZ blast?

Three South Korean soldiers were injured in the explosion. South Korea’s Joint Chiefs of Staff said two of them suffered critical injuries.

How did North Korea respond to the DMZ mine blast findings?

Kim Yo-jong denied North Korea’s involvement, accused Seoul of fabricating the findings, and warned of merciless retaliation if the South takes any corresponding actions.

UN Command says Armistice Agreement violation occurred over DMZ mine blast

Q: What did the United Nations Command find about the DMZ mine blast?

The United Nations Command said an Armistice Agreement violation occurred and that a joint investigation with the South Korean military identified an active North Korean mine on the South Korean side of the Military Demarcation Line. It said it is handling the case through established Armistice mechanisms.

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Summary

The United Nations Command said Wednesday that last week’s mine blast inside the Demilitarized Zone was an Armistice Agreement violation. A joint investigation with the South Korean military found an active North Korean mine on the South Korean side of the Military Demarcation Line. South Korea’s military had earlier said the Sept. 21 blast was highly likely caused by North Korean resin antipersonnel mines and injured three soldiers. North Korea denied involvement and warned of retaliation.

Key Facts

South Korea’s Joint Chiefs of Staff said Monday that North Korean resin antipersonnel mines were highly likely to have caused the Sept. 21 blast.
The blast injured three South Korean soldiers, and two of them suffered critical injuries.
The UNC said it is addressing the violation through established Armistice mechanisms.
North Korea’s Kim Yo-jong accused Seoul of fabricating the findings and warned of merciless retaliation if the South takes corresponding actions.

By Yonhap

Published Sep 30, 2026 9:53 am KST

A North Korean resin antipersonnel mine that the South Korean military found near the site of mine explosions inside the Demilitarized Zone (DMZ) separating the two Koreas that left three South Korean service members injured / Courtesy of Joint Chiefs of Staff

The United Nations Command (UNC) said Wednesday it found a violation of the Armistice Agreement has occurred over last week's mine blast inside the Demilitarized Zone (DMZ).

"Based on the findings of the investigation, UNC determined that an Armistice Agreement violation occurred. UNC is addressing the violation through established Armistice mechanisms," it said in an emailed statement.

The UNC said a joint investigation team with the South Korean military identified an active North Korean mine on the South Korean side of the Military Demarcation Line (MDL).

"UNC remains committed to maintaining and enforcing the Armistice Agreement and fulfilling its responsibilities to preserve stability and prevent escalation on the Korean Peninsula," it said.

South Korea's Joint Chiefs of Staff released Monday its preliminary findings on the joint investigation with the UNC on the Sept. 21 mine blast. It determined that North Korean resin antipersonnel mines "highly likely" caused the two explosions that injured three South Korean soldiers. Two of them suffered critical injuries.

North Korea denied its involvement in a statement issued Wednesday by Kim Yo-jong, the powerful sister of its leader Kim Jong-un, accusing Seoul of fabricating the findings and warning of "merciless" retaliation if the South takes any corresponding actions.

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