Three people were killed in a shooting over a domestic dispute in Khyber's Bara tehsil, reported 24NewsHD TV channel on Sunday.
According to police, two brothers and a sister-in-law were among the deceased.
The bodies were shifted to the hospital.
The accused managed to escape from the crime scene.
Meanwhile, second accused of alleged honour killing of a girl in Islamabad arrested.
Police also arrested the brother of the deceased Hina Zarif. The incident took place in Aara Karpa area of Nellore police station. The police have registered a case of honour killing.
Reporter: Jahanzeb Khan