Hours after a CBI team recorded statements from the family of the rape-and-murder victim from RG Kar Medical College & Hospital, the agency filed a motion in court requesting a polygraph test for the arrested suspect, Sanjay Roy. The CBI is also considering conducting a psychological autopsy on the victim to determine if she was experiencing unusual distress prior to her death. This type of autopsy involves analyzing documents such as diary entries, call logs, and messages to reconstruct the victim’s mental state and is admissible in court.
On Monday, a CBI team spent over six hours interviewing the victim’s parents at their Sodepur home. Subsequently, a three-member forensic team from the CBI, equipped with a laser printer, scanner, and laptop, conducted a detailed examination of the house before departing around 6:30 p.m. Later, CBI officers sought permission from the additional chief judicial magistrate at Sealdah court to administer a polygraph test to Sanjay Roy, who has been providing contradictory statements in recent days, leading investigators to suspect he may be misleading them. The polygraph test and voice analysis are expected to reveal the emotional state of the accused and detect any signs of deception, according to an officer.
The victim’s family has expressed doubts about Sanjay’s role, suggesting that if he was involved, others might also be implicated. In their petition to the Calcutta High Court, they argued that their daughter was gang-raped and that multiple individuals were involved. They have requested a CBI investigation into the Kolkata Police Commissioner, alleging a lack of cooperation and an attempt to prematurely close the case. “The KP commissioner should be investigated by the CBI. He didn’t cooperate with us and tried to end the matter hastily, prompting us to seek a CBI probe,” said the victim’s mother.
The CBI has identified inconsistencies in Sanjay Roy’s account of the events on the day of the crime. Doubts have arisen about his statements regarding his movements in the hospital, especially after discrepancies emerged from interviews with hospital guards. Officers also discovered a potential route to the seminar hall—the crime scene—that had minimal visibility on CCTV. The CBI’s investigation into Roy’s movements on August 8 and 9 revealed multiple entries into the hospital: at 2 p.m., 6 p.m., and 11 p.m. on August 8, and again at 4 a.m. on August 9. Lalbazar authorities reported seeing him in Sovabazar and Chetla on August 8 and provided CCTV footage to the CBI.
In their psychological autopsy of the victim, CBI officers have reviewed documents that reflect her state of mind. The victim’s father provided photos of diary pages to the CBI. During a search of the victim’s Sodepur residence, the police found a loose page in the diary, which led to concerns about missing pages. “Some pages from our daughter’s diary may be missing. The police showed a loose page to my wife and asked if it was her handwriting. My brother took a photo of it. I’m unsure what happened to that page,” said her father. Her mother had previously suggested that the diary might hold clues to the murder, including a note about “wanting to be happy” written the day before the victim’s death.
