The incident took place in the Sadu Khel area of the tehsil.
"An improvised explosive device planted along the roadside went off as two vehicles of paramilitary Frontier Corps (FC) passed by, killing two soldiers and wounding six others," senior local administration official Muhammad Tayyab Ali told AFP.
He said the blast destroyed one of the vehicles.
A local intelligence official also confirmed the incident and casualties.
Tehreek-e-Taliban Pakistan (TTP) condemned the attack on the FC personnel.
Firing took place after the incident and the Pak-Afghan Highway was closed.
Security forces cordoned off the area and a search operation is underway.
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