South Korea's military said Thursday it is not investigating the alleged flight of South Korean drones over North Korea's capital earlier this month, describing it as a matter to be clarified by the North.

In October, the Ministry of Foreign Affairs of the DPRK stated that South Korean drones had violated the country's airspace three times since the beginning of the month. According to the ministry, Seoul used drones to distribute political leaflets in the Pyongyang area.

Kim Yo-jong, the influential sister of North Korean leader Kim Jong-un, accused the South Korean military on Monday of sending unmanned drones carrying leaflets over Pyongyang in recent days. "We clearly know that the main culprit behind the Pyongyang drone incident is the trash of the South