SEOUL, South Korea (AP) — North Korea said Saturday it found the remains of a South Korean drone during a search in its capital, Pyongyang, claiming the drone proved the South’s military was behind the alleged drone infiltrations over the city’s skies earlier in the month.

North Korea accused South Korea of flying propaganda-filled drones over Pyongyang and threatened “retaliation,” state media reported Friday.

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.