Unidentified people detonated a time device near an army convoy near Mirali in North Waziristan on Monday. The army convoy was enroute to Miranshah from Bannu. The convoy retaliated killing "an innocent tribesman" working in nearby fields. AP adds: A land mine exploded Monday in a village in northwestern Pakistan, killing three young girls who were playing in a field, an official said. One of the girls apparently stepped on the land mine triggering it to explode in Inayat Qala, local official Amir Zaman Khan said. The girls, whose bodies were badly mutilated in the explosion, were cousins and between 7 and 10 years old, Khan said.