South Korea Reviews Border Drone Incident After Troops Mistake U.S. Aircraft for Potential Threat

South Korea's military will inspect the Army’s 1st Corps on Friday after troops nearly engaged what was initially believed to be an unidentified aircraft near the border with North Korea, only to later confirm it was a U.S. Marine Corps drone participating in a joint military exercise.

According to the Joint Chiefs of Staff (JCS), the aircraft was detected on Thursday over northern Gyeonggi Province and was handled under standard military procedures while its identity was being verified. The drone was eventually confirmed as part of a combined U.S.-South Korea training operation, preventing a potentially serious friendly-fire incident.

The event sparked heightened security concerns in the heavily guarded border region. Military authorities issued evacuation alerts to residents and farmers within the Civilian Control Zone in Cheorwon and surrounding areas after the unidentified aircraft was detected. Local media reported that frontline communities received emergency text messages shortly after 2 p.m., instructing people to seek shelter until the situation was clarified.

South Korean forces initially treated the aircraft as a possible security threat because they could not immediately determine whether it belonged to allied forces or North Korea. Troops increased their readiness level and prepared to engage the aircraft while continuing to track its movements. Authorities later sent follow-up notifications confirming that the aircraft had been identified as a friendly U.S. drone and that the situation had been resolved.

U.S. Forces Korea told local media that the drone belonged to the U.S. Marine Corps and was operating during a joint training exercise with South Korean forces. The U.S. military added that it is reviewing the circumstances surrounding the incident.

The near-miss highlights the elevated security environment along the Korean border, where military tensions remain high as North Korea continues to reject reconciliation efforts with Seoul. It also follows a recent incident near a U.S. military base in Pyeongtaek, where residents were briefly advised to evacuate after a white phosphorus-related event.

The JCS said its readiness inspection office will review the military’s overall response to the drone incident to assess operational procedures and strengthen coordination during future joint exercises.