Hyderabad: In a shocking incident, a 13-year-old student delivered a baby inside a school washroom in Andhra Pradesh on Saturday, leaving her teachers, other staff and friends flabbergasted.

The incident happened in a government school in the Madhapur area of Hyderabad on Saturday when the grade 9 student reportedly first complained of a stomach ache, after which her teacher sent her to the washroom along with a classmate, NDTV reported.

When the classmate returned, she reported that the girl had delivered a baby. The girl's parents were then summoned to the school.

Surprisingly, no one, including 13 teachers, had noticed that the girl was expecting a baby.

"She is very slim and would walk with a dupatta on her stomach and she would sit with her bag on her lap, so we didn't know," said the girl's teacher.

According to reports, the girl was allegedly raped by a neighbour, but a rape case was lodged only after the incident became public on Monday.

The district education officer said that the student's parents may have been aware of her pregnancy but fearing social stigma were reluctant to tell anyone.