Nobody has yet claimed responsibility for the killings, which took place in Hangu district Khyber-Pakhtunkhwa, which lies along the Afghan border.
Police blamed Taliban militants for the attack, saying they fired on a patrol party and fled.
“Taliban militants are active in this area and they are responsible for the attack,” Hangu police chief Mian Mohammad Saeed told AFP by telephone, adding that three officers were killed.
Gul Jamal, another senior police official, confirmed the incident and blamed “terrorists” for the attack.
“We have cordoned off the area and have launched a search operation,” Jamal said.
Pakistan says 35,000 of its people, including more than 3,000 soldiers, have been killed as a result of terrorism since the 9/11 attacks and the US-led invasion of neighbouring Afghanistan.
COMMENTS
Comments are moderated and generally will be posted if they are on-topic and not abusive.
For more information, please see our Comments FAQ