#1 The Reason
Police investigation started and they suspected that it was someone within the family who was responsible for this job. Samples were taken and forensic tests were performed.
Well, the blood matched that of Neha and this is how they arrested her. She admitted to this crime and the reason was shocking. She killed her daughter as she wanted a SON. Neha said that she was so obsessed to have a son that she even tried surrogacy and performed pujas. Since they are wealthy family of 13, money wasn't a big concern for them. Now this is disgusting.
