The girl was allegedly kidnapped by the three accused, who came in an autorickshaw last evening, while she was walking on the road. She was then gangraped in an open field on the outskirts of the village, they said.
The victim's body was found hanging from a tree on the outskirts of the village by her parents, police said.
Police have identified the accused who hails from neighbouring Vibharinthalapadu village, said Nandigama Circle Inspector Sathya Kishore, adding no arrests have been made so far.