North Korea on Monday denied having anything to do with three drones that crashed in Paju, Baeknyeong Island and Gangwon Province and accused South Korea of fabricating evidence.
The North's Committee for the Peaceful Reunification of the Fatherland said Seoul "fabricated the incident of unmanned aerial vehicles in its frantic move to slander the North."
It was the first comment from Pyongyang since the rudimentary UAVs were discovered.
But Defense Ministry spokesman Kim Min-seok said it is "clear to everyone" that the drones came from North Korea. He called on Pyongyang to "immediately halt such provocations and stop verbal attacks against the South."
Kim also slammed as "improper" remarks from New Politics Alliance for Democracy lawmaker Jung Chung-rae casting doubt on the evidence.