"A US unmanned aerial system malfunctioned overnight near Bagram Airfield. Forces recovered key parts of the vehicle. No casualties," they twitted.
The Bagram Airfield, some 50 km north of the Afghan capital of Kabul, has been serving as a main US and NATO military base in Afghanistan over the past 15 years.
Drones are often used by the coalition forces for reconnaissance missions and to attack militants in remote areas of the mountainous Central Asian country.