U.S. drones fired a barrage of missiles at a vehicle and a house in a Pakistani tribal area bordering Afghanistan Saturday, killing at least four suspected militants, Pakistani officials said.

The strike took place in Degan area of North Waziristan, known as a bastion of Taliban and Al-Qaeda.

“US drones fired four missiles on a compound, killing four militants,” a senior security official told AFP.

The district is a stronghold of the Hafiz Gul Bahadur militant group, he said, adding that militants from the Afghan Taliban allied Haqqani network also operate in Degan.

Bahadur’s faction is alleged to have been involved in frequent attacks on U.S. troops in Afghanistan, but generally shies away from carrying out operations inside Pakistan. Several recent drone strikes have killed militants affiliated with Bahadur’s group.

Pakistan, on a number of occasions, protested and showed reservations over such attacks, terming them as the violation of its sovereignty and a big reason of collateral damage.
Pakistani parliament also passed a resolution against the drone strikes.

However Washington maintains the program is a necessary and effective tool in combatting militants.