Pakistan's military says a roadside bomb blast in the troubled South Waziristan tribal region bordering Afghanistan has killed at least six soldiers and wounded at least 10 others.
Military officials say a military truck ran over the device on a local road and fell into a ravine. The officials say the wounded were taken to a hospital in Wana, the region's main town, and that some of them are in serious condition.
South Waziristan has been the scene of fierce clashes between Pakistani troops and militants linked to the al-Qaida terror network since March. The army says at least 246 militants and 171 troops have been killed.
The region is also considered a possible hideout of al-Qaida leader Osama bin Laden.