Army spokesman Major Murad Khan told Deutsche Presse-Agentur dpa that a suicide bomber rammed an explosives-laden vehicle into security forces' headquarters located in Madyan area of restive Swat valley in North West Frontier Province. Six soldiers were also injured in the bombing, he added.
Earlier, thousands of people protested the killing of three civilians allegedly by army shelling.
The demonstration started after a mortar round hit a house in the Allah Abad area of Swat district, leaving a women and her two children dead, local journalist Nisar Ali Khan said.
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