New Delhi, March 15 (IANS): Two convicts in the Dec 16, 2012 gang-rape moved the Supreme Court Saturday challenging the Delhi High Court verdict upholding their death sentences.

The accused, Mukesh and Pawan Gupta, have contended that they were "denied fair trial under the garb of day-to-day trial and (under) torture they were compelled to accept the prosecution story which is not only concocted but also contrary to the facts".

The Delhi High Court Thursday upheld the death sentences awarded to four convicts in the gang rape, saying that their "barbaric" act is "not worthy of human condonation" and society cannot be a a spectator to "such depraved behaviour".

A division bench of Justice Reva Khetrapal and Justice Pratibha Rani also dismissed the appeals of the four convicts - Mukesh, 26; Akshay Thakur, 28; Pawan Gupta, 19; and Vinay Sharma, 20 - challenging the Sep 13, 2013 trial court verdict sentencing them to death.

A 23-year-old physiotherapy intern was gang-raped and brutally sexually assaulted by six men, including a juvenile, in a moving bus. The accused then threw her and her male companion out of the vehicle, stripped of clothing, to die by the roadside on the cold December 2012 night.

The woman died of grave intestinal injuries Dec 29, 2012 at Singapore's Mount Elizabeth Hospital, where she was airlifted for specialised treatment.

One of the six accused was found dead in a cell in Delhi's Tihar Jail. A juvenile involved in the crime was Aug 31, 2013 sent by the Juvenile Justice Board to a reform home for three years, the maximum term for a juvenile under the law.