Adding further twist to the case, the doctors of JJ Hospital confirmed that Pratyusha Banerjee was pregnant and most probably underwent abortion a month ago.
A leading English daily reported that the police will find it difficult to ascertain the paternity of the child as there are no tissues left to carry out a DNA test.
"The findings showed that there was a conception few days or a month before her demise, and there was a premature death of the foetal cell," a source said.
The preliminary autopsy report showed ligature marks on the neck of Pratyusha indicating death due to asphyxiation and hanging. A team of doctors conducted the post-mortem on her body for over three hours and the entire procedure has been videographed and photographed.