Peshawar: Three policemen were killed and as many injured when militants attacked a police van in northwest Pakistan on Friday, officials said.
The armed militants attacked the van at Babajee Kandao in Buner district of Khyber-Pakhtunkhwa province.
An assistant sub-inspector was among those killed.
The policemen engaged the militants and exchanged fire for some time.
The injured were taken to a nearby hospital.
Additional security forces reached the area and authorities imposed a curfew before a search operation was launched.
No group claimed responsibility for the attack, which was carried out hours after a suicide bomber blew himself up in a Shia madrassa in Peshawar, the capital of Khyber-Pakhtunkhwa.
Fourteen people were killed and over 30 injured in the suicide attack.