SEOUL, April 11 -- The Democratic People's Republic of Korea (DPRK) has sent three spying drones to South Korea for reconnaissance purposes, the South Korean Defense Ministry said Friday.

Defense Ministry spokesman Kim Min-seok told reporters that multiple circumstantial evidences were identified to confirm the three unmanned aerial vehicles were dispatched by the DRPK, citing appearances and limited flying capability.

The ministry held a press briefing to announce its preliminary investigation result into the three drones found in the western and eastern frontline areas in recent weeks.