Unknown miscreants blew up Government Girls Primary School in the Kaka Sahib area of Nowshera on Sunday where police personnel have rounded up around 28 suspected persons. Police said that the miscreants planted explosive material with the school which went off with a big bang early in the morning in Kaka Sahib area. The building of the school was razed to ground and destroyed completely. On the other hand, police personnel after the blast have rounded up 28 suspected persons and shifted them for interrogation during search operation which was launched after the blast.