A number of schools, including at least two girls schools, have closed down in Quetta after threatening letters were received by their managements. Security was also beefed up in parts of the provincial capital and in Mastung. Some of the letters threatened that if purdah was not observed in schools, then teachers and administrative heads will have to bear the consequences. Similar letters threatening against wearing 'western' clothes were also sent to schools in Mastung. The letters warned the school managements with the presence of informants among the students and the staffers and threatened severe consequences in case of non-compliance.