The soldiers were enroute to Kohat when their vehicle hit the mine. The injured have been shifted to Kohat hospital and the area has been cordoned off. A search operation has been launched in the area following the mine blast.
"Frontier Corps troops were on a routine patrol in upper Orakzai when an IED (improvised explosive device) blast took place in Yakh Kandao," the district's political administrator, Abdul Qadir, told AFP.
"Six security officials died on the spot while three were injured. A search operation has been launched in the area to trace the militants."
A paramilitary official from the Frontier Corps said the dead included a colonel, and said two other troops were wounded. A senior security official told AFP the convoy had been en route from the village of Ghaljo in Orakzai to the northwestern garrison town of Kohat.
The operation in Orakzai agency has ended but the area has seen some militant activities aimed as sabotaging the peace of the region.
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