South Korean media report that North Korea is developing unmanned attack aircraft using American technology imported from the Middle East.
The reports say the drones are based on MQM-107D Streaker target drones and are believed to have come to Pyongyang through Syria.
The Streakers can fly at 920 kilometers per hour and are commonly used for testing missiles.
The media reports said North Korea is trying to attach explosives to the drones so they can launch suicide attacks, but the attempts have not been successful.
Officials from North Korea have not commented on the reports.