He demanded that Delhi police do the needful and include his name in the chargesheet or else the family would be forced to explore legal recourse.
The 23-year-old victim's brother said that just on the ground that he is a minor, his crime cannot be judged as any lesser.
He also asked the media to exercise restraint while reporting on the issue.
Delhi Police on Thursday filed its charge sheet in a Delhi court against five men arrested in the case, slapping on them murder, rape, kidnapping and other charges.
The case of the sixth accused, a juvenile, will be filed before the Juvenile Justice Board.
In the 33-page charge sheet, the role of the juvenile offender is also elaborated.