The woman was found strangulated at her house early last morning and her autopsy report confirmed that she was sexually assaulted before the murder.
She lived with her parents at a one-plus tenement in a chawl, where she occupied the top room which served as her study room.
Police have so far quizzed over 100 people, including friends, relatives, and colleagues of the deceased, in connection with the crime.
However, police are yet to identify the prime suspect.
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When asked whether a love affair could have been the trigger behind her murder, the officer said nothing can be ruled out at this stage and they are taking all angles into consideration.
However, the victim's alleged boyfriend, a sound engineer, was found to be working at a film studio early last morning when the crime was believed to have taken place.
The officer said the woman was first strangled with hand and then with jeans, which was found wrapped around her neck when her body was recovered. Apart from that no injury marks were found on her body.
The officer informed the finger prints got destroyed in the chaos after the victim's mother and neighbours rushed inside her room to douse fire, allegedly started by her attacker to destroy evidence. The woman's body was recovered at around 4 AM.
The victim was last seen with some of her friends who had left her place around midnight on December 5 after partying, he said.
Police yesterday registered a case under various sections of IPC for murder, rape and unnatural sex.
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