Thousands protested outside a police station in the city, demanding accountability. Police have suspended three officers.
Meanwhile family members have turned away visiting politicians and police officials, demanding action instead.
Rape and violence against women remain at high levels despite widespread public anger at high-profile cases.
The victim's charred remains were discovered after she disappeared on Wednesday.
Police allege she was gang-raped before she was killed. Four men have been arrested in connection with the case.