PESHAWAR (Agencies) - Security forces have cleared terrorists stronghold Damadola as they were using this area as a base for their terror activities, said an FC spokesman here on Saturday. A joint operation by security forces and Qaumi Lashkar was launched on January 27 to clear this area from the terrorists. During the operation a number of terrorist hideouts were destroyed and heavy casualties were inflicted on the terrorists. Since the start of this operation, reportedly 60 terrorists were killed while 7 soldiers embraced Shahadat. A thorough search and clearance operation in the area is under way, he said. Meanwhile, Taliban militants blew up a girls school on Saturday in Bannu, the latest in a wave of attacks by extremists targeting educational institutions, a minister said. No one was hurt in the attack, which took place in the village of Huwaid, eight kilometres north of the town of Bannu. The explosive material was planted at three different places in the girls primary school, which completely destroyed five out of seven rooms of the building, provincial education minister Sardar Hussain Babak said. He blamed the attack on Taliban, saying they were opposed to girls education. Senior police official Iqbal Marwat confirmed the incident. He added: No one was hurt in the explosion as it occurred at 6:00 am.