PESHAWAR (AFP) - Militants blew up a boys primary school in Khyber on Monday, the latest in a wave of attacks by extremists targeting educational institutes, local officials said. No one was hurt in the bombing in the village of Ashraf Kalay in the Khyber tribal region, the officials said. Militants blew up a government boys primary school with explosives at around 3:00 am, tribal administration official told AFP, adding that all 7 rooms of the school were destroyed. Another local administration official, Rehan Gul Khattak, blamed the attack on the militant group Lashkar-e-Islam.