by legal experts, has cited 30 witnesses in connection with the December 16 incident in which the physiotherapy student was gangraped and brutally assaulted in a moving bus in south Delhi.
The victim died in a Singapore hospital on Saturday morning.
Investigators said they will seek death penalty for the accused in the case.
Six persons, including a 17-year-old boy, was apprehended in connection with the incident, which evoked widespread outrage and anger and triggered violent protests in India Gate and Raisina Hill.
The chargesheet, to be filed in the Saket court, will detail the role of five men while mentioning that a separate report would be sent to Juvenile Justice Board for the trial of the minor boy allegedly involved in the case, the official said.
The chargesheet gives details about the sequence of events, the treatment, shifting of the patient to a Singapore hospital as well as her death, the official said.
Police have slapped rape, murder and other charges against the accused.
The six accused arrested for the crime have now been charged with murder which attracts death sentence or life imprisonment.
Special prosecutor Dyankrishnan will be conducting the trial on day to day basis. The special prosecutor has volunteered to conduct a trial free of cost and will be assisted by two juniors.
All the six accused, including the juvenile, had initially been booked for common intention (Section 34 IPC), dacoity (397 IPC), gangrape (376 [G] IPC) and attempt to murder (307 IPC).
The police claimed to have a water-tight case and with the addition of murder as a charge, they will now be in a relatively comfortable position to push for a death penalty.
"Following the demise of the rape victim in Singapore, the autopsy was conducted by a Singaporean Medical Team. The report will be made available to us at the earliest. We hope to file the chargesheet by the January 3 and section 302 IPC, which is the penal section for murder, has been added in the case," said Dharmendra Kumar, special commissioner (law and order).
"It will be our endeavour to ensure the harshest punishment in the book to the culprits," Kumar added.
(With PTI inputs)