The unidentified militants attacked the government girls' primary school with explosives last night in Hakim Khan Keley village in the Bara area of Khyber district.
An official confirmed that the school was attacked. "All rooms and boundary walls of the school were destroyed," he said.
The school was closed at the time of explosion. No casualty has been reported yet. The attackers fled the scene following the incident.
The residents of the villagers had already left when army launched Khyber-1 operation in the area earlier this month, officials said.
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Khyber, one of the seven semi-autonomous tribal areas in Pakistan, is governed by tribal laws. Bordering Afghanistan, the area is a stronghold of local and foreign militant organisations and insurgents.