Two policemen, including an officer, were killed and four other persons injured when a police van was targeted with a roadside bomb on the outskirts of Pakistan's northwest Peshawar city today, officials said.
The bomb planted by the side of Kohat Road was triggered as the van was passing the area this evening, officials said.
An inspector and another policeman were killed while two policemen and as many civilians were injured, officials at the state-run Lady Reading Hospital told the media.
The powerful blast damaged several other vehicles, police officials said.
Footage on television showed that the police van was reduced to a mangled heap of metal. Police officials said the bomb contained about 12 kilograms of explosives.
No group claimed responsibility for the attack.
Northwest Pakistan has witnessed a spike in violence blamed on the Taliban, who had threatened to target security forces and the government.
A senior police official who played a key role in operations against the Taliban was killed by a suicide bomber in Peshawar last week.