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South Korea's foreign ministry announced on October 22 that it will send a letter to the president of the U.N. Security Council regarding last month's land mine blast in the Demilitarized Zone (DMZ), which it attributes to North Korea. The letter, to be sent by Seoul's permanent representative to the U.N. in New York, will urge Pyongyang to apologize and take responsibility for the incident, which Seoul says violated the Korean War Armistice Agreement, and will call for dialogue to ease tensions. Foreign ministry spokesperson Park Doo-soon confirmed the plan at a regular briefing, noting the letter would be dispatched the same day in New York time. The blast occurred on September 21, injuring three South Korean soldiers during a search-path operation; Seoul's military concluded on October 5 that North Korean forces had planted the mines on the southern side of the Military Demarcation Line. Yonhap, Korea Times, KBS World, and other outlets report the move as a formal international response to the incident.