PESHAWAR (Agencies) Militants blew up three more schools in Tehsil Safi of Mohmand Agency Sunday, pushing the number of destroyed schools in the area to 56. The latest victims were two girls and one boys school in Ziarat Kalay and Saeed Khanand areas of the restive agency, which borders Peshawar and Charsadda districts of Khyber Pakhtunkhwa. The planted bombs destroyed the schools completely. The militants have destroyed 56 school buildings during the last two years in the agency, as they oppose the modern education system, describing as tool used to westernise the society.