Indian police charged six men with murder on Saturday, hours after a woman who was gang-raped and beaten on a bus in New Delhi nearly two weeks ago died in a Singapore hospital.

New Delhi police spokesman Rajan Bhagat said the six face the death penalty if convicted, in a case that has triggered protests across India for greater protection for women from sexual violence, and raised questions about lax attitudes by police toward sexual crimes.

Indian Prime Minister Manmohan Singh said he was aware of the emotions the attack has stirred, adding it was up to all Indians to ensure that the young woman's death will not have been in vain.

The victim "passed away peacefully" early Saturday at Mount Elizabeth hospital in Singapore with her family and officials of the Indian Embassy by her side, Dr. Kevin Loh, the chief executive of the hospital, said in a statement.

The victim's body was cremated Sunday in New Delhi soon after its arrival from Singapore on board a special Air-India flight, amid an outpouring of grief by people across the country.

Singh and Sonia Gandhi, head of the ruling Congress party, were at the airport to receive the body and meet family members of the victim who had also arrived on the special flight.

After 10 days at a hospital in New Delhi, the Indian capital, the woman was brought Thursday to Mount Elizabeth, which specializes in multi-organ transplants. Loh said the woman had been in extremely critical condition since Thursday, and by late Friday her condition had taken a turn for the worse, with her vital signs deteriorating.

'The outrage now should lead to law reform that criminalizes all forms of sexual assault, strengthens mechanisms for implementation and accountability, so that the victims are not blamed and humiliated.'—Meenakshi Ganguly, Human Rights Watch

"Despite all efforts by a team of eight specialists in Mount Elizabeth hospital to keep her stable, her condition continued to deteriorate over these two days," Loh said. "She had suffered from severe organ failure following serious injuries to her body and brain. She was courageous in fighting for her life for so long against the odds, but the trauma to her body was too severe for her to overcome."

A statement issued by United Nations spokesman Martin Nesirky said UN Secretary-General Ban Ki-moon "offers his sincerest condolences" to the victim's family and "utterly condemns this brutal crime."

"Violence against women must never be accepted, never excused, never tolerated," the statement said. "Every girl and woman has the right to be respected, valued and protected."

The woman and a male friend, who have not been identified, were on a bus in New Delhi after watching a film on the evening of Dec. 16 when they were attacked by six men who raped her. The men beat the couple and inserted an iron rod into the woman's body, resulting in severe organ damage. Both were then stripped and thrown off the bus, according to police.

Indian police arrested the six people in connection with the attack, which left the victim with severe internal injuries, a lung infection and brain damage. She also suffered from a heart attack while in the hospital in New Delhi.

Indian High Commissioner, or ambassador, T.C.A. Raghavan told reporters that the scale of the injuries the woman suffered was "very grave" and in the end "proved too much."

The frightening nature of the crime shocked Indians, who have come out in the thousands for almost daily demonstrations.

As news of the victim's death reached New Delhi early Saturday, hundreds of policemen sealed off the high-security India Gate area, where the seat of India's government is located, in anticipation of more protests. The area is home to the president's palace, the prime minister's office and key defense, external affairs and home ministries.

The area had seen battles between protesters and police for days after the attack.

Ten metro stations in the vicinity also were closed Saturday, Bhagat said.

Police were allowing people to assemble at the Jantar Mantar and Ramlila grounds, the main areas allotted for protests in New Delhi, he said.

Protesters call for justice

Mourners began gathering at Jantar Mantar 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. Women face daily harassment across India, ranging from catcalls on the streets, groping and touching in public transport to rape.

They put a wreath studded with white flowers on the road, lit a candle and sat around it in a silent tribute to the young woman. Members of a theatre group nearby played small tambourine and sang songs urging the society to wake up and end discrimination against women.

Dipali, a working woman who uses one name, said the rape victim deserved justice. "I hope it never happens again to any girl," she said.

Dozens of students of Jawaharlal Nehru University in New Delhi marched silently to the bus stop from where the rape victim and her friend had boarded the bus on Dec. 16. They carried placards reading, "She is not with us but her story must awaken us."

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A wreath and candles are placed on a road as Indians sit around it while attending a gathering to mourn the death of a 23-year-old gang rape victim in New Delhi on Saturday. (Altaf Qadri/Associated Press)

Nehra Kaul Mehra, a young Indian studying urban and gender policing at Columbia University in the United States, said, "We come from a feudal and patriarchal set-up where we value men more than women.

"We kill daughters before they are born. Those who live are fed less, educated less and segregated from boys," she said with a black band of protest around her mouth.

Sonia Gandhi, the governing Congress party chief, assured the protesters in a statement that the rape victim's death "deepens our determination to battle the pervasive, the shameful social attitudes and mindset that allow men to rape and molest women and girls with such an impunity."

The protesters heckled Sheila Dikshit, the top elected leader of New Delhi state, when she came to express her sympathy with them and forced her to leave the protest venue. They blamed her for the deteriorating law and order situation in the Indian capital.

Rape penalties under examination

Meenakshi Ganguly, South Asia director of Human Rights Watch, said the woman's death was a sobering reminder of the widespread sexual violence in India.

"The outrage now should lead to law reform that criminalizes all forms of sexual assault, strengthens mechanisms for implementation and accountability, so that the victims are not blamed and humiliated," Ganguly said.

The prime minister said he understood the angry reaction to the attack and that he hoped all Indians would work together to make appropriate changes.

"These are perfectly understandable reactions from a young India and an India that genuinely desires change," Singh said in a statement Saturday. "It would be a true homage to her memory if we are able to channel these emotions and energies into a constructive course of action."

He said the government was examining the penalties for crimes such as rape "to enhance the safety and security of women."

"I hope that the entire political class and civil society will set aside narrow sectional interests and agendas to help us all reach the end that we all desire -- making India a demonstrably better and safer place for women to live in," Singh said.