Pakistani officials say six troops have been killed in various operations and a bomb attack.

A military official says two soldiers were killed and three were injured on Sunday during a Pakistani army operation against militants in the lawless Tirah valley area of the Kyber tribal region. Sixteen militants also were killed.

In a second incident, intelligence officials say two soldiers were killed and three others were wounded when their convoy was bombed Sunday in the North Waziristan tribal region.

The officials spoke on condition of anonymity in line with policy.

Also, two members of Pakistan's Frontier Corps were killed on Sunday during an operation in Bolan district of Baluchistan. Senior government official Waheed Shah says 13 criminals suspected in kidnappings and robberies also were killed.