After trading artillery fires on Aug. 20, South Korea and the DPRK put their respective troops on the highest alert, bringing the Korean Peninsula to the brink of an armed conflict.
The DPRK drone flew across the border and reached above general outposts in middle and eastern frontline units.
The South Korean military detected the drone with its surveillance radar and scrambled helicopter and fighter jets to intercept the aerial vehicle, yet ending in failure.
A military official was quoted as saying that the type of the drone was not exactly identified as it was invisible to naked eyes. He said that it was not a part of birds as it flew at a constantly low speed and altitude.
More about: