New Delhi, Dec 2 (IANS): The post-narco test of Aaftab Amin Poonawalla, the accused in the ghastly murder of his live-in partner Shraddha Walkar in Delhi's Mehrauli area, concluded on Friday. His test was conducted inside the Tihar prison by the FSL officials.

As per sources, the team from the Forensic Science Laboratory, Rohini had reached Tihar jail for the post-narco test at around 11.30 a.m.

"A four-member team had reached Tihar Jail No.-4 on Friday along with the investigating officer for a post-narco analysis session of Aaftab," said a senior FSL official.

"The test started around 12. He was again asked similar questions and his answers will be matched with the questions from the previous narco analysis session," said the sources.

If needed, the narco test will be done again, claimed the sources.

Further details were awaited.

Meanwhile, the prison authorities have also increased the security of his barrack after the police van was attacked by men, who were armed with swords.

Though his confessions in the narco test cannot be used in the court, yet it proved that the investigators were proceeding in the right direction.

Pertinent to mention here that the findings of both polygraph and narco test are not admissible in the court. These tests will only help the Delhi Police gather evidence, and thereby increase the possibility of prosecution of the guilty.