The incident happened at the city's Modern Montessori Inter College at about 11 am on Monday. Neetu Chauhan, a class XI student, had gone to a toilet on the third floor of the school building. Sometime later, she was found lying on the ground floor, bleeding. The girl, according to the school authorities, was rushed to a nearby hospital and was later referred to Baba Raghav Das Medical College in Gorakhpur, but she died on the way, a senior police official said.
Parents of the girl have lodged a police complaint against unknown persons, alleging that their daughter was thrown off the third floor.
"On the way to the hospital, my son asked Neetu what had happened and she said she was pushed off the third floor. I want a detailed investigation," said the girl's father Paramhans Chauhan.
The family has also alleged that it was the girl's classmates who informed them about the incident not the school management.
CCTV footage from the school has not been recovered since the school's CCTV system is out of order.
The school in question is one of the prestigious institutions in Deoria and was founded in 1988.
The Uttar Pradesh police had recently issued directives to schools to beef up security after the murder of a 7-year-old Pradyuman Thakur at Gurgaon's Ryan International School.
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