Militants blew up a government-run girls' primary school on the outskirts of northwest garrison town Bannu late Saturday night. The school is almost completely destroyed, said Mohammad Hussain Khan, a local police official in the area. They planted explosives around the walls and then dynamited the building. Security forces cordoned off the area after the explosion to start investigation. Militants opposed to co-education have destroyed hundreds of schools, mostly for girls, in the northwest of the country in recent years as they wage a fierce insurgency to enforce sharia law.