PESHAWAR (AFP) - The Taliban blew up a girls school in Khyber district, an official said Wednesday. Militants detonated explosives overnight at the government-run school in Bazgarah town, about 40 kilometres west of Peshawar. The building had 21 rooms. All have been completely demolished, local administration chief Shafeerullah Wazir told AFP by telephone. There were no casualties because the property was empty at the time. Taliban and their local allies are responsible. They are destroying educational institutions to avenge the military operation against their hideouts in the area, said Wazir. This was the ninth educational institution blown up in Khyber over the past six weeks, he added. Militants have destroyed hundreds of schools, mostly for girls, in northwest in recent years.