Police in the Indian capital Delhi have used water cannon to disperse protesters angry at Sunday night's gang rape of a 23-year-old student.
The protesters were hosed as they tried to bring down metal barricades outside Chief Minister Sheila Dikshit's home.
Meanwhile, the government has announced a series of measures to make the capital safer for women.
There has been outrage in India after the student and her male friend were attacked on a bus.
The woman remains in a critical condition, doctors say.
Four people, including the bus driver, have been arrested. Police say they are looking for two more people.
Three of the arrested appeared in court on Wednesday and were remanded in custody. The driver was produced in court on Tuesday and also remanded in custody.
Some reports said a fifth man detained in the eastern state of Bihar was being brought to Delhi.
On Tuesday night, the chief of the ruling Congress party, Sonia Gandhi, visited the hospital where the student is being treated.
Mrs Gandhi later said that the "strictest possible measures" should be taken to prevent such incidents.
Dozens of protesters, mostly college students, gathered outside the chief minister's home on Wednesday morning, demanding that the government ensure safety of women in the capital city.
Many of the protesters were carrying banners and chanting: "We want equal rights for women."
The government has come under tremendous pressure from opposition MPs, students and women's rights activists, with many accusing the authorities of not doing enough to stop crimes against women.
On Wednesday, women MPs from the opposition Bharatiya Janata Party (BJP) held a demonstration outside parliament while hundreds of activists and students shouted slogans outside the Delhi police headquarters.