The family of the male friend of the woman, who died on Saturday after being gangraped, demanded that the six rapists should be hanged "as soon as possible".
"Our hearts are with the family of the girl, and we are very sad," a family member of the woman's friend told IANS, declining to be identified.
The 23-year-old woman was gangraped on board a moving bus on December 16. Five men and a suspected juvenile tortured her and beat her friend too when they resisted. Both were then stripped and dumped by the roadside.
"Now that the girl has died, the six men should be tried for murder," the family member said. "They should be hanged as soon as possible."
The family member said they would attend the last rites of the woman after her body was brought to India from Singapore.