A polygraph and a narco test is imperative in the Shraddha Walkar murder case as Aftab, during the interrogation, has been deceptive in nature and tried to mislead the interrogators.
Even after the confession, police have been scouring for evidence to nail him in court for the murder of Shradha Walkar but it remains a challenge as the crime was detected after nearly six months.
As the investigation is still underway, police teams have visited and conducted searches to recover more remains of the 27-year-old victim, Shraddha Walkar, at the Mehrauli forest.
Aaftab, 28, was arrested on Saturday by Delhi Police for allegedly strangling his live-in partner Shraddha Walkar. He sawed her body into 35 pieces which he kept in a 300-litre fridge for almost three weeks