Maulana Ashraf Marwat was killed in Shaktoi area of South Waziristan on Tuesday, said mourners at his funeral.
The identity of the gunmen was unclear.

Police blamed Marwat for helping organize the deadly 2010 attack on the Shah Hasankhel village in the northwestern Lakki Marwat district in which a truck packed with explosives was detonated at a volley ball tournament.

Marwat was linked to militant, said a leader of a local pro-government militia.

The police also say Marwat killed another militant commander, Maulana Iftikhar Marwat, reportedly because of his association with the Afghan Taliban.

The dispute between the two men highlighted tensions within the insurgency.

Iftikhar Marwat had apparently urged militants from Lakki Marwat district to focus their fight on foreign forces in Afghanistan instead of against Pakistani security forces.