GTB Nagar - Five-year-old Muskaan Khan died when a portion of slab fell on her as she was walking out of the school. Three more were injured in the mishap including the mother of Muskaan. This incident took place in Sanatan Dharam High School in Guru Teg Bahadur Nagar, Antop Hill. The school was shut till Thursday, and it has been reopened from today onwards. The school official was planning to repair the dilapidated structure. The incident shook everyone, but not the school officials it seems. Marriage pandals have been set up inside the school premise even at the time students are studying. Parents are very concerned about their children. The school must be closed on the immediate basis to avoid inevitable danger.