Principal of Kako Secondary School Aju Ahmed and three teachers – Atul Rahman, Abdul Bari and Md Shakaut – gangraped the girl on Sunday when she was alone in the building, Sub-Divisional Police Officer (SDPO) P K Srivastava said. 

The accused took her to the roof of the school building and committed the crime, the SDPO said quoting an FIR registered against the four based on a complaint filed by the girl’s mother. 

The victim was spotted by her mother, also a teacher in the same school, lying in a “dishevelled” state on the roof. The girl then narrated the incident to her, the SDPO said. 

The accused are at large and searches are being conducted to nab them.

Sunday, routinely a holiday, had been declared a working day in the school in a verbal communication by the Principal who had instead ordered it to be closed on Friday, Srivastava said.