Three persons,including two policemen,were killed and 13 others injured when a group of four militants,some of them wearing suicide vests,tried to storm a police complex in northwest Pakistan on Monday.
The militants drove up to the gate of the Police Lines in Swabi town of Khyber-Paktunkhwa province at 9.15 am.
They fired indiscriminately when guards stopped them and one militant blew himself up at the gate,officials said.
Another militant,who too was wearing a suicide vest,was shot dead by policemen.
The two other attackers fled from the scene after they failed in their bid to enter the police complex housing offices and residential quarters.
Police launched a search operation to trace them but were unable to make any arrests.
Two policemen and a civilian who had come to the nearby judicial complex were killed in the attack.
Three passers-by and 10 policemen were injured.
One policeman and a civilian,who sustained serious injuries,were taken to Peshawar.
Deputy Inspector General of Police Abdullah Khan told reporters that the militants could have caused greater devastation if they had succeeded in entering the Police Lines,which also houses several government offices and courts.
Khan said the militants were targeting police and security personnel,politicians and civilians in retaliation for the operations being conducted against them in the tribal areas and other parts of northwest Pakistan.
Experts of the bomb disposal squad were called in to defuse the suicide vest of the militant who was killed by police.
They said the vests worn by the militants contained eight to 10 kilograms of explosives.
No group claimed responsibility for the attack.
Due to tight security in the provincial capital of Peshawar,militants are now targeting police installations in other parts of Khyber-Pakhtunkhwa.