Seven people were killed while 30 others injured in a car bomb explosion on Billitang road at the backside of Cantt police station in Kohat district on Sunday morning, district police said. The dead included all civilians while 20 FC and 9 police officials were among the injured. More than 10 rooms of the police station had been completely destroyed. The security forces soon after the explosion had cordoned off the area and started investigations. The bang of the explosion was heared at about 7km radius which created fear among the residents. The injured were rushed to district hospital. It may be recorded that just a day before on Saturday more than 43 people were killed and dozen others wounded in two bomb explosions in a refugee camp at Kacha Pakha in Kohat district.