The CBI is likely to file the appeal against the Sealdah court order by Friday with detailed arguments in favour of capital punishment, they said.

A sessions court in Kolkata will pronounce today the quantum of sentence for Sanjay Roy. Follow The Hindu’s live updates

Roy was on January 18 convicted under charges which entailed a minimum sentence of life imprisonment, while the maximum could be capital punishment.

An Indian court awarded a life sentence on Monday to a police volunteer convicted of the rape and murder of a junior doctor at the hospital where she worked in the eastern city of Kolkata, rejecting demands for the death penalty and saying it was not a rare crime.

An Indian court on Monday sentenced a police volunteer to life imprisonment for the rape and murder of an on-duty doctor last year – a crime that sparked nationwide protests. Sanjay Roy, 33, plans to appeal the judgment in a higher court.

The CBI will file an appeal before the Calcutta High Court, seeking death sentence for Sanjay Roy, who was sentenced to "life imprisonment until death" by a Sealdah court in

India's West Bengal state launched an appeal on Tuesday to overturn a life sentence in favour of the death penalty for a police volunteer convicted of the rape and murder of a junior doctor, a senior lawyer aware of the development said.

The Bengal government has moved a division bench to file an appeal for the death penalty for the convict, Sanjay Roy, in the RG Kar rape-murder case.