New Delhi : With doubts being raised on the mysterious death of December 16 Delhi gang-rape accused Ram Singh, who was found hanging inside his cell Monday morning, the post mortem findings have become extremely significant.

After initial reports suggested Singh committed suicide, jail authorities and the government have been mum on the cause of the death – they only say that he was found hanging inside his cell.

The post mortem will be conducted at AIIMS on Tuesday. Officials had yesterday said that the post mortem will be conducted at Deen Dayal Upadhyay hospital.

Ram Singh’s family will be handed over the body after the autopsy, reports said.

The family has alleged that he was murdered and demanded a CBI probe into the incident. “He has not committed suicide. He has been murdered and then hanged. I am saying this on the basis of the fact that evidences has been erased. He could not move his hand as it had fractures.

Ram Singh, 35, was seen hanging at 5.45 a.m. by a Tamil Nadu policeman in the prison’s Jail No. 3 – 84 days after the horrendous gang-rape. He used a part of bed linen to hang from an iron grille eight feet high in his 15×12 rectangular cell.

He was arrested from a Delhi slum where he lived Dec 17 — a day after he and five others, including a juvenile, raped the physiotherapist trainee, a crime that shook the collective conscience of the country and made for shocking news across the world.

Ram Singh was the bus driver which the young woman and her male friend boarded Dec 16 night in a south Delhi neighbourhood.

While the woman was brutally raped, her friend was thrashed. Both were flung out of the bus, bleeding and without clothes. The woman died 13 days later in Singapore.

Tihar officials had earlier said that Ram Singh was on “suicide watch”, after he and the other accused reportedly became depressed. The watch was lifted later, they said.

Ram Singh, who had confessed to the crime, had been charged on 13 counts. One of the five accused is his younger brother Mukesh. All are being tried in fast-track court.

Lawyers said Ram Singh’s death would not affect the trial. He was supposed to go to the court Monday.

The others accused in the case are Pawan, 19, and Akshay, 29, who are held in Tihar Jail No. 4, Vinay, 20, and Mukesh, 26, both in Jail No. 7. The sixth accused is a juvenile, lodged and being tried separately.