Is Sanjay Roy the only accused in the case, or were there multiple people involved in the alleged rape and murder of the 31-year-old trainee doctor?

RG Kar rape and murder case convict Sanjay Roy's sister apologised to the family of the victim and said she won't challenge the Sealdah court order at a higher court.    The Sealdah court in Kolkata convicted Sanjay Roy,

Sanjay Roy has been found guilty of the heinous rape and murder of a junior doctor at RG Kar Medical College, sparking national outrage.