According to the police, they have filed the chargesheet before the Fifth Additional Sessions Court in Adilabad district.
According to investigating officials, over 40 persons, including a few policemen, were named as witnesses in the case.
On November 25, the police found the body of the woman between Ramnayaktanda and Ellapatar villages in Lingapur mandal of Komaram Bheem (Asifabad).
Police arrested Shaik Babu (35), Shaik Shaboddin (30) and Shaik Mukdum (40) on the same day. They have been remanded to judicial custody.
A police official said that the DNA and forensic science reports from Hyderabad arrived on Friday.
The 30-year-old woman and her husband were earning a livelihood by selling balloons and other supplies in the neighbouring villages of Lingapur and Jainoor mandals.
According to police, the three accused found her when she was on her way to another village and gangraped her before she was killed. The chargesheet has been filed within 20 days of the incident
Speaking to TNM, DySP and Investigation Officer A Satyanarayana, said, "We have got the required forensic and DNA samples reports from Forensic Science Laboratory, Hyderabad. All the evidences and documents were submitted to the special court in Adilabad. The magistrate will very soon take a decision on the commencement of the trial."
He further added, "Along with forensic reports, the DNA samples have also matched with the accused."