Media: North Korean drones invaded South Korean airspace

Five North Korean drones crossed into South Korea on Monday and South Korea responded by scrambling jets and attack helicopters and opening fire to try to shoot down the North Korean aircraft, the South Korean military said, Report informs referring to Reuters.

As part of its response, the South Korea military also sent surveillance aircraft into the North to photograph its military installations, a South Korean military official said.

"This is a clear act of provocation by the North violating our airspace," a South Korean official with the Joint Chiefs of Staff, Lee Seung-o, told a briefing.

One of the five North Korean drones flew near the South Korean capital, Seoul, and the others flew near the west coast,

Lee said the South Korea military "operated assets to shoot down" the drones.

He did not say if any drones had been shot down but the Yonhap news agency later said South Korea's military fired about 100 shots but failed to shoot any down.

Lee said South Korea initially fired "warning shots" when it first detected the drones.

South Korean reconnaissance aircraft flew into the North to take photographs in action corresponding to the North Korean drone flights, Lee said, suggesting the North Korean drones were also meant for reconnaissance.

South Korea tracked the drones crossing from North Korea over the so-called Military Demarcation Line between the two countries after detecting them in the skies of the western city of Gimpo at around 10:25 a.m. (01:25 GMT), the military said earlier.