AT least nine suspected militants, including two foreigners, were killed in Pakistan's lawless tribal region in a US drone strike and a separate Pakistan military operation, security officials have said.

Pakistan has seen a spate of militant attacks since Prime Minister Nawaz Sharif took office last month.

Missile strikes by unmanned US aircraft have inflicted the most damage against Taliban fighters in the mountainous areas straddling the Afghan border in past years, sometimes with heavy civilian casualties.

In the third such attack since Mr Sharif came to power, two suspected militants riding a motorcycle were struck by missiles in the Mir Ali area of North Waziristan on Saturday night, one official said.

A different security source said they were foreign militants of Turkmen origin.

In a separate operation by the Pakistan Air Force, jets pounded several militant hideouts overnight, killing seven insurgents, senior security officials said.