Why this girl student jumped off fourth floor of school building to death in Hyderabad?

Hyderabad: A 14-year old girl allegedly committed suicide by jumping off the fourth floor of her school building in Hyderabad on Thursday, a day after the schools opened for the new academic year, city police said. A student of Class 10, the teenager was the daughter of a civil contractor.
The police said the teenager went to school as usual, left her school bag and lunch box, and then either fell or jumped — it is unclear as yet — from the window in her classroom located on the fourth floor.
“She sustained serious injuries to her head and body. She was immediately rushed to a corporate hospital located nearby where she was pronounced brought dead,” the police said.
The school management told the police that the incident happened even before the day’s classes began. “The reason for her death is not known. We are investigating the case,” LB Nagar inspector Ashok Reddy told reporters.
Meanwhile, Andhra Pradesh Child Rights Association, a non governmental organization, demanded that the police should probe whether it was a suicide or an accident, among other possibilities.
The school was shut for the day, and the students were sent home. The management is being questioned by the police.