According to Dawn, an improvised explosive device (IED) blast took place targetting the personnel's vehicle when they were patrolling in the area.
A curfew was, hence, imposed in the area.
The security forces have launched a search operation to nab the culprits behind the explosion.
Earlier this month, five people were killed in an IED blast in South Waziristan.
Officials had said the head of a peace committee Wali Jan Mehsud was among those killed in the attack. (ANI)