The CIA-operated drone fired two missiles on the compound in Datta Khel area of the tribal region early this morning, killing four militants, a security official said.
The identity of those killed could not be determined immediately, but an intelligence official said that some foreigners linked with al-Qaeda were also among the dead.
US forces have intensified drone attacks on both sides of Pakistan-Afghanistan border in recent days.
Pakistan military has been also mounting an offensive against local and foreign militants in the restive district and yesterday its fighter jets killed 20 rebels.
