India, Nov. 6 -- The sister of a 12-year-old student found dead at a residential school in Arunachal Pradesh's East Siang on Wednesday alleged that her brother was subjected to physical and mental harassment by senior students ahead of his death.

Her brother, a Class 7 student from Mudang Tage village in Lower Subansiri district, was found dead on the overhead water tank of an under-construction building on the school campus on November 1.

Police said the death came to light when the student, who was absent from the morning session of physical training, was found dead by construction workers who informed the school authorities.

The Ruksin Police Station initially initiated proceedings following a report from the school about the death ...