An unmanned plane of NATO-led International Security Assistance Force (ISAF) crashed in Afghanistan's eastern Paktika province on Wednesday, a statement of the alliance released here said, Xinhua reported.
"An unmanned aerial vehicle (UAV) crashed in the Sharan district of Paktika province today," the statement added.
The cause of the crash was mechanical failure, it emphasized.
A recovery force was immediately sent to retrieve the UAV. The wreckage was recovered, the statement added.
It is the third pilotless plane has crashed over the past one month in Afghanistan. Previously two such unmanned planes were crashed in the northern Kunduz province.