A pilotless plane with the U.S.-led Coalition Forces crashed in Sabari district of Khost province in eastern Afghanistan on Tuesday, said the Coalition press office in the region, Xinhua reported.
However, the press office, set in the provincial capital Khost city, denied the drone was shot by militants, putting technical problem behind the incident.
The drones are often used by coalition forces to attack Taliban militants in remote areas of the country.
Meanwhile, Taliban militants fighting Afghan, NATO and U.S. forces have claimed that the drone was shot down by their men.
This is the second unmanned plane crash in the post-Taliban country over the past one week, a drone crashed in northern Kunduz province last Saturday.