The apex court, in May, upheld the order of Delhi High Court, which had sentenced the four convicts - Akshay, Pawan, Vinay Sharma and Mukesh to death.
On December 16, 2012, six people gang-raped a 23-year-old physiotherapy intern in a moving bus in Delhi.
The woman succumbed to her injuries in a Singapore hospital on December 29, 2012.
One of the accused, Ram Singh, had hanged himself in the prison, while another person, who was a juvenile at the time of the crime, was convicted in August last year and is serving the maximum sentence of three years in a reform home. (ANI)