Pakistani tribesmen gather around the bodies of alleged Afghan spies killed by militants in Ghulam Khan village near Miranshah, 08 Nov 2008

Pakistani security officials say suspected Taliban militants have killed two Afghan men, accusing them of spying for U.S. forces.

Officials said the militants left the bodies on a road in the North Waziristan tribal area of Pakistan's volatile northwest.

On Friday, Pakistani officials said a suspected U.S. missile strike in the region killed at least 13 people.

They said missiles believed to be fired from an unmanned U.S. drone aircraft targeted a suspected Taliban militant compound in the tribal area.  The officials said some of those killed were foreign militants, but their identities are not yet clear.  There has been no independent confirmation of the casualty figures.

U.S. officials have not commented on the incident.  Months of suspected U.S. missile attacks on alleged insurgents in Pakistani territory have strained relations between the two allies.

The Pakistani air force said it attacked several suspected Taliban hideouts Friday, killing at least 16 militants.

Aircraft dropped bombs on targets in the northwest tribal region, near the towns of Damadola, Sewai and Sipra in the Bajaur district.

On Thursday, a series of Pakistani air strikes killed at least 17 suspected militants.

Earlier this week Tuesday, Pakistani Prime Minister Yousuf Raza Gilani said the next U.S. president should stop the U.S. missile attacks.

U.S. President-elect Barack Obama has said that if U.S. forces have top al-Qaida members in their sights and if Pakistan is "unwilling or unable" to act, he would order unilateral strikes.

Some information for this report was provided by AFP and Reuters.