The 15-year-old girl was allegedly abducted and gang-raped by Chandramohan, Dinesh and Harish seven months back, Circle Officer Aruna Bharati said.
She was abducted on her way to school and taken to a nearby jungle, where the accused raped her. The victim did not disclose the matter to anyone as the accused had threatened her of dire consequences if she revealed it to anyone, police said quoting the complaint.
It was only after when she became pregnant, the victim narrated the incident to her mother, they said.
The victim's mother later lodged a complaint in this regard. The minor was sent for medical examination and a case of of gangrape has been registered against the youths, Bharati said.
The accused are lodged in jail and further investigations are on, she said.