In a statement, Mohammad Khurasani, the spokesman for the Pakistani Taliban militant group — known as Tehreek-e-Taliban Pakistan — claimed responsibility. He said that the slain head of the peace committee had been supporting security forces for the past several years.
The Pakistani Taliban have been holding peace talks since May in Kabul, Afghanistan. But isolated militant attacks and security raids on militant hideouts have continued, raising fears these talks could break in the coming months, if not weeks.
A formal cease-fire between Pakistan and the TTP is still in place.
The talks in Kabul are hosted by the Afghan Taliban, a separate group allied with the Pakistani Taliban. The Taliban seized power in Afghanistan a year ago. That takeover has emboldened the Pakistani Taliban, whose fighters and leaders, officials say, have been hiding in Afghanistan.
Islamabad has demanded that the new Taliban rulers in Afghanistan prevent militant groups, including TTP, from using Afghan territory for attacks inside Pakistan. Before the Taliban takeover next door, Islamabad and Kabul had often traded blame and accused each other of sheltering militants.