The girl was identified as a resident of Dindori district who had come to Bina, around 400kms from her home, to take part in a recruitment test.
One of the doctors who conducted her post-mortem analysis said she might have been raped by multiple persons and her body had bruises apart from bite marks on her chest. The final post-mortem report, however, is awaited.
"The vaginal swabs have been sent to the forensic lab", said a police official who is part of the investigation.
Late on Tuesday, her father arrived to take back the body. He told the police that his daughter had left home to appear in a recruitment examination for job in the postal department in Jabalpur.
There was some confusion regarding her whereabouts as the family said she was supposed to be on her way to Indore at the time of the incident.