Officials say militants from Afghanistan stormed the house of a local anti-Taliban militia leader in northwest Pakistan, killing him and three members of his family.
The incident occurred late on August 8 in Tenai Dara village in Upper Dir district, around 250 kilometers north of Peshawar.
Police named the militia leader as Nazmin Khan.
Two other family members were wounded, including a woman who was in critical condition.
Pakistan began a military offensive in the northwest in the aftermath of a Taliban attack on the country's busiest airport in Karachi that killed dozens.
More than 500 militants and 27 soldiers have been killed in the offensive so far, according to the military. The death toll for insurgents could not be independently confirmed.