In December last year, a 23-year-old trainee physiotherapist died two weeks after she was gang-raped and mutilated in a moving bus in Delhi, raising questions over women’s safety in the capital and sparking debates over their treatment in India.

Here is a timeline of key events in the case:

December 16:  A 23-year-old trainee physiotherapist is beaten, raped for almost an hour and thrown out of a moving bus in New Delhi by six people. Her male friend, a software engineer, is beaten with a metal rod.

December 17-22: The woman remains in Delhi’s Safdarjung Hospital. Police arrest suspects. Hundreds of students and activists block roads in Delhi and march to the president’s palace, breaking through police barricades. Police use batons, tear gas and water cannon to turn back protestors, who demand the death penalty for the accused and safety assurances for women.

December 23: The government moves to stamp out the protests, banning gatherings of more than five people. About 30 to 35 people, including a few policemen, suffer injuries.

December 24: Authorities shut roads and metro stations in New Delhi. Prime Minister Manmohan Singh appeals for calm in a televised address.