The six accused in the Delhi gangrape case had allegedly tried to mow the girl down under the bus after dumping her in south-west Delhi but her male friend saved her from being crushed.
As the Delhi Police is set to submit its charge sheet before the trial court on Thursday, more details of the horrific crime that has shaken the nation's conscience are tumbling out.
The victim, a paramedical student, was gangraped in the moving bus on December 16, brutally assaulted and then thrown out of he vehicle along with her male friend, a software engineer, who was also thrashed.
The girl and her friend were returning from the Saket mall after watching a film 'Life of Pi' and had boarded the chartered bus at Munirka for Dwarka not knowing it was plying illegally. The minor among the accused had called for passengers telling them that it was going towards their destination.
The sources said when the girl and her friend entered the bus, they found a total of six persons who were not passengers and were known to each other.
The accused allegedly passed lewd comments at the girl to which the male friend objected to and picked up an argument.
"They asked him where he was taking her and this resulted in the argument. They first assaulted the boy with iron rods and when the girl tried to protect her friend, they beat her up also. When she resisted, they got enraged and sexually assaulted her," the sources said.
And then the accused allegedly tried to drive the bus over the girl but she was pulled aside in the nick of time by her male friend.
As she was pinned down and raped, the brave young woman put up a fight but was hopelessly outnumbered. She bit three of the men assaulting her. The bite marks on the three accused men are likely to be part of the Delhi Police's evidence in their charge sheet, the sources said..
The sources said that 50-page charge sheet will be filed before a fast-track court on January 3. The main charge sheet will be accompanied by hundreds of pages of annexures, they said.
Charges of gangrape, murder, kidnapping, criminal assault and robbery among other sections of the IPC that will be pressed against five of the six accused while police would send a separate report to the Juvenile Justice Board for the trial of the 17-year-old allegedly involved in the case.
The sources said the prosecution during the trial would demand death penalty for the five accused in connection with ghastly incident.
The Singapore doctor, who carried out the postmortem of rape victim, will be included as a witness by the Delhi Police in its charge sheet, the sources said.
The male friend of the victim will be the main witness in the case while the Singapore doctor, who carried out the postmortem and the Indian mission official who received her death certificate, would be asked to testify, they said.
The sources said under the Indian law, it was mandatory for a doctor carrying out a postmortem in a medico-legal case to be made a witness.
They said none of the accused has been made approver as the police has managed to prepare a "tightly knit" case against them. The girl had died in the Singapore hospital on Saturday.
The fast-track court for the case is likely to be notified by the government tomorrow, the sources said. They said the annexures to the charge sheet will include case diaries and statements of nearly 30 witnesses.
In addition to these, the police would also produce as evidence CCTV footage of the mall where the victim along her friend had gone to watch the movie and forensic evidence collected from the bus, they said.