A bomb targeting a tribal elder allied to the Pakistani government killed six people and wounded 11 in a northwestern town on Monday, police said.
The attack took place in the town of Doaba, 190 kilometres (118 miles) west of the capital Islamabad and near the tribal belt where Taliban and other Al-Qaeda-linked militants have strongholds.
"A remote-controlled device planted in a vehicle owned by Malik Habibullah, a local pro-government elder, went off, killing six people and injuring 11 others," local police chief Sajjad Khan told AFP.
He said Habibullah was not in the car when the bomb exploded.
Pakistani troops have for years been locked in deadly battles with domestic insurgents in parts of the northwest.
The United States has in the past accused Pakistan of not doing enough to crack down on the militants, who also plot attacks on Western targets and in neighbouring Afghanistan.
Elsewhere in the northwest, two policemen were killed while defusing a bomb in the district of Swabi, 50 kilometres northwest of Islamabad, police said.
"The two policemen had already defused four bombs planted near a government boys' school in the area but a fifth bomb exploded while being defused, killing both of them," local police chief Mian Muhammad Saeed told AFP.