The operation was conducted by Afghan and NATO and International Security Assistance Force in Mangso district of eastern Khost province two nights back.
According to provincial ISAF officials, a number of militant suspects were also detained during the operation.
International Security Assistance Force Media office in eastern Khost province said, the operation was conducted based on an intelligence report where a senior anti-government militant commander was detained.
The officials further added, the detained militatns commander was involved in plotting and carrying out insurgency activities in this province.
ISAF officials also said, Afghan and coalition security forces seized some weapons and ammunitions during the operation.
Anti-government armed militants group yet to comment regarding the operation.