The girl was hanged from a tree after the gangrape, police said (Representational)
Seven boys, who had appeared for their class 10 board examinations, were arrested on Sunday for allegedly raping and killing a 12-year-old girl in Assam's Biswanath district, police said.
The girl was hanged from a tree after the heinous crime. The incident happened on Friday.
A senior police officer told PTI that the suspects, were on the run, but were arrested by a police team.
The accused, after the examination, had called the victim to a house on the pretext of organising a party and raped her, the officer said.
It is suspected that the girl was raped on Friday night and then hanged from a tree in a forest near the house, the senior police officer said.
The body was found on Saturday.