The fallout of an attack on a major power station in northwest Pakistan on Tuesday.
Dozens of suspected militants attacked the station with mortars and rocket- propelled grenades, killing at least seven, according to police.
A policeman and a security guard died on the spot, while five others died after being kidnapped.
Four kidnapped employees were still reported missing.
The assault, in the run-up to general elections on May 11, cut off electricity to half of Peshawar.
It served as a reminder that Pakistan's leaders have failed to tackle a potent Taliban insurgency, despite a series of security crackdowns.
Pakistan's Taliban, which is close to al Qaeda, has threatened to escalate violence ahead of the polls.
However, there was no immediate claim of responsibility.
Seven killed in power station attack (0:55)
April 2 - Dozens of suspected militants attack a major power station in northwest Pakistan, killing at least seven people. Sarah Sheffer reports. ( Transcript )