Militants opened fire on security forces' vehicles that were patrolling the Gawak Area of Lower Orakzai Agency, killing one security official.
The security forces retaliated and killed six militants.
Orakzai used to be a hub of militants but the militant stronghold has weakened considerably since the military operation was launched in the area.
Several militant hideouts have been destroyed and caches of arms and ammunition recovered during the operation.
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