How many militants were killed by security forces during the roughly 20 to 22 hour clearance operation that concluded at the Kohat Police Lines on 19 September 2026?

Explanation: The search and clearance operation following the Kohat blast concluded after around 20 to 22 hours, with eight terrorists killed by security forces retaking control of the Special Branch section of the complex. The prolonged nature of the operation reflected the attackers' use of the compound's internal layout for cover, a tactic increasingly seen in complex militant assaults on fortified security installations in Khyber Pakhtunkhwa over the past year.