Although doctors have said that baby Ahuti was a victim of child battering, police are yet to nab the culprits.
"This is a classical case of child battering. She had severe injuries on both sides of her head," said Dr Harish M Pathak, head of Forensic Department at KEM Hospital.
It is said that her twin sister also died just 12 days after birth.
Parents of the infant are the prime suspects in the murder case. Police said they would first question the couple before deciding to name them in the FIR.
A police official said inquiries would be first made with girl's parents Kalpesh and Dharmishta. The couple is presently in Gujarat and will be summoned to Mumbai for the probe.
"The autopsy report showed that baby Ahuti did not die an accidental death and that she died after being beaten and suffering head injuries," said a doctor of KEM Hospital. According to the doctors attending on her, there were clear indications that the baby was battered.
Doctors were sure that none of the injuries could have been caused by a fall from the bed or complications of a Caesarean section that the mother underwent at the seventh month.
Baby Ahuti was brought to KEM Hospital on Sept 24.
Death of baby Ahuti brings to memory the shocking case of baby Falak.
The two-year-old girl was admitted to AIIMS Trauma Centre in New Delhi on Jan 18 this year with a fractured skull and human bite marks on her body.
In spite of every attempt to save baby Falak, she died 56 days after she was admitted to hospital. Five surgeries were done on baby Falak by doctors of AIIMS.