A Delhi Court on Saturday sent Aaftab Amin Poonawala, accused of killing his live-in partner and chopping her body into 35 pieces in south Delhi's Mehrauli, to judicial custody for 13 days, police said.

Police have initiated the legal process for production of the accused for further proceedings in the polygraph test, Special Commissioner of Police (Law and Order, Zone II) Sagar Preet Hooda said.

Poonawala allegedly strangled his live-in partner Shraddha Walkar, 27, and sawed her body into 35 pieces, which he kept in a 300-litre fridge for almost three weeks at his Mehrauli residence, before dumping those across the city over several days.

The polygraph test on Poonawala went on for nearly three hours on Friday at the Forensic Science Laboratory here. Poonawala reached the FSL at Rohini here for his third session of the polygraph test at 4 pm and left after 6:30 pm, police said.

Poonawala's four-day police remand expired on Saturday.

The accused was arrested on November 12 and sent to five-day police custody which was further extended for another five days on November 17.

On Tuesday, he was sent to four more days of police custody.

The Delhi Police had seized five knives from Poonawala's flat and sent them to FSL to ascertain if they were used in the crime.

Police had earlier said the saw allegedly used by Poonawala to cut his live-in partner Shraddha Walkar's body is yet to be recovered.