KHAR: Unknown miscreants blew up a girls college in Bajaur Agency headquarters Khar late on Thursday, sources said. They said a bomb went off at around 11:00 pm and damage 11 rooms of the college. At several mosques in the agency, the militants have also left warning letters, written in Pashto, asking people to stop their mature girls from attending schools and colleges or face the consequences.Meanwhile, hundreds of people staged a protest rally in Khar to protest the assassination of PPP leader Benazir Bhutto and held President Pervez Musharraf responsible for the tragic incident.