The case has triggered protests across India and raised questions about lax attitudes by police towards sexual crimes.
Protesters and politicians from across the spectrum called for a special session of parliament to pass new laws to increase punishments for rapists - including possible chemical castration - and to set up fast-track courts to deal with rape cases within 90 days.
Thousands of Indians have lit candles, held prayer meetings and marched through various cities and towns to express their grief and demand stronger protection for women and the death penalty for rape, which is now punishable by a maximum of life imprisonment.
On Monday, the Indian army and navy cancelled their new year's celebrations, as did Sonia Gandhi, head of the ruling Congress party. Several hotels and clubs across the capital also did not hold their usual parties
Women face daily harassment across India, including catcalls on the streets and groping and touching on public transport.