Militants blew up three schools in the Mamozai area of Orakzai Agency on Thursday.
All the three schools were reduced to rubble by the explosive devices used by the attackers .
Last Saturday, a primary school for girls was damaged in a similar attack.
Earlier, militants blew up a girls school in Tehsil Ambar of Mohmand Agency.
The miscreants had planted explosive devices in the two-roomed school house. Both rooms collapsed in the blast.
Until now, 42 schools in various areas of Mohmand Agency have been destroyed by militants.
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