Two suspected suicide bombers attacked police in northwestern Pakistan on Thursday.
The bombing in the town of Bannu near the North Waziristan militant enclave on the Afghan border, was the second attack on police in as many days.
The first bomb went off inside a police compound with the second, minutes later, just outside.
A Bannu police officer said seven police are among the dead.
A doctor at Bannu's main hospital said 15 people had been killed and about 20 wounded people had been brought in.
