The assistant director of the Forensic Science Laboratory, Rohini, Sanjeev Gupta, on Tuesday said the process of conducting a polygraph test on Aaftab Amin Poonawala, the accused in the murder of Mumbai woman Shraddha Walker in the national capital, has begun and the report will be out in a week's time.

Delhi Police had previously said Aaftab, following his arrest in the case, confessed to killing his live-in partner in their apartment in West Delhi's Chhatarpur and chopping her body into 35 pieces.