A US drone attack on Sunday killed at least four militants in Pakistan’s restive northwestern tribal area.

A US drone attack on Sunday killed at least four militants in Pakistan's restive northwestern tribal area, security officials said.

The missiles struck a compound in Khushhali Turikhel village of the troubled North Waziristan tribal district on the Afghan border.

"US drones fired six missiles into a militant compound. At least four militants were killed," a security official told AFP.

Local intelligence officials confirmed the attack and casualties.