KABUL, March 4 (Xinhua) -- A pilotless plane of the NATO-led Resolute Support (RS) coalition forces crashed in Afghanistan's eastern province of Parwan overnight, leaving no casualties, the RS forces said Saturday.

"A U.S. 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 U.S. 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.