CBI is investigating the Kolkata rape-murder case and polygraph test is going to be an important part of this investigation. CBI has got approval for polygraph test of Dr. Sandeep Ghosh, former principal of RG Kar Hospital. Apart from this, on Thursday, CBI reached the court with Sandeep Ghosh and 4 other trainee doctors who had last dinner with the deceased. Permission has also been sought for polygraph test of Sanjay Roy, the main accused in the case. CBI wants to conduct polygraph test of four other employees of RG Kar Hospital.
According to the information, CBI is planning to conduct polygraph test of four employees of RG Kar Medical College, two first year PGT doctors (Arka and Soumitra), one house staff (Golam), and one intern (Subhadeep). Let’s take a look at who these four are and what is the reason for suspicion on these employees-
Arka and Saumitra: Both of them are first year PGT doctors, whose fingerprints were found in the seminar room.
Golam: This house staff was seen in the CCTV footage going from the emergency duty point on the first floor towards the third floor.
Subhadeep: He was an intern who was present on the third floor and was one of the ones who last spoke to the deceased.
Why does the CBI want to conduct a polygraph test?
The CBI aims to verify the statements of these employees, as other medical reports (such as DNA taken from the victim’s body, vaginal swab, PM blood) have failed to clearly link them to the incident. The CBI wants to know whether these four had tampered with evidence in any way or were part of any conspiracy.
What happened on that night of 9th August?
That night the deceased and the other four employees were on duty for 36 hours. The deceased and two first-year students (Arka and Saumitra) had dinner together around 12 am. After this, the three went to the seminar room, where they were present till 1:30-2:00 am and also watched Neeraj Chopra’s Olympic javelin final.
Doctors on duty usually use the sleep room for rest, which is located right opposite the seminar room. That night a polysomnography test was going on in the sleep room, which ended between 1:30-2:00 am.
When the sleep room became vacant, Arka and Soumitra went there. Because nurses or hospital staff call doctors to the sleep room to take care of patients.
The deceased was the most senior among them all and in case of emergency during duty, junior doctors are asked to take care of patients. Whenever an emergency arises, the senior is informed.
According to Arka and Soumitra, the deceased decided to rest in the seminar room while the other doctors went to the sleep room. According to them, from 2:00 am to morning they did not disturb the deceased as there was no emergency.
Golam was on emergency duty at night, which is located on the first floor of the same building. At around 2:45 am, he went to the third floor, and his activities were recorded in CCTV. According to Golam, he went to the third floor, finished the test and returned to the emergency between 3:30-3:45.
Subhadeep, who is an intern, was in a separate room on the same floor, which did not have AC. The seminar hall (crime scene), sleep room and intern room are located in the same space on the third floor and are near each other.
According to the statements of Arka, Soumitra and Golam, the seminar room was soundproof so they could not hear any sound.
At around 9:15 am, when his professor came for ward round and searched for the deceased, Soumitra went to the seminar room and found him dead. He then informed his colleagues and seniors, who in turn informed the hospital administration and the police.
The CBI has found that there are some discrepancies in the statements of all four, especially as to why only Soumitra went to call the deceased and no one else did. Hence, the CBI is resorting to a polygraph test to rule out all possibilities.