Watchman Homdeo Padole (27) and Arun Bhuskule, director of the institute, located on the city outskirts, were arrested yesterday, while the head mistress and hostel warden were also booked as co-accused with regard to the incident, a Nagpur (Rural) Police personnel said.
The victim, a class VI student, was staying in the school hostel and had been sodomised by the watchman for the past sometime, the officer said, adding that the accused used to threaten the boy of dire consequences if he disclosed anything to his parents or anybody else.
The case has been registered under sections 377 (unnatural offences), 506 (criminal intimidation) and 34 (common intention) of the IPC, and also under relevant sections of Scheduled Castes and Scheduled Tribes (Prevention of Atrocities) Act, police said.