Story highlights Evidence was sent to a special DNA fingerprinting facility in southern India for re-examination

Investigators highlighted several discrepancies in the post-mortem report

Five people arrested after two girls were found dead hanging from a tree

Authorities do not plan to charge the arrested men, who included two police officers

New Delhi, India (CNN) Two teenage girls, who were found hanging from a tree in northern India in May, were not raped as originally alleged, according to new forensic reports commissioned by federal investigators.

The Central Bureau of Investigation (CBI) sent samples obtained by police in the northern Uttar Pradesh state, where the incident had happened, to a special DNA fingerprinting facility in southern India for re-examination after it took over the case, an official source told CNN Tuesday.

"(Test) results didn't show the girls were sexually assaulted," said the CBI source, who requested anonymity. "There were also several discrepancies in the post-mortem report."

But with the latest evidence appearing to rule out rape, investigators, for now, have dropped plans to file charges against the five.

"The CBI is not going to file the charge-sheet against them as of now. However, we are not giving them clean chit either," CBI spokeswoman Kanchan Prasad said.