© Reuters
The remotely piloted aircraft targeted a residential compound used by militants in Miranshah, the main town in North Waziristan, a Pakistan Taliban commander told Reuters.
"The four dead are local Taliban militants," an intelligence official told Reuters.
The controversial drone program, a key element in U.S. counter-terrorism efforts, is highly unpopular in Pakistan, where it is considered a violation of sovereignty which causes many civilian casualties.
The United States says the strikes in Pakistan's unruly northwestern tribal regions along the Afghan border are very accurate, and there is minimal collateral damage.
Several militant groups have strongholds in the area, and often take advantage of the porous frontier to launch cross-border attacks on NATO and Afghan forces.
A Pakistani parliamentary committee recently demanded an end to drone strikes on Pakistani territory as part of its recommendations for how its relationship with Washington should change.
word "suspected" will mark this century.