The Central Bureau of Investigation (CBI) has got permission to conduct a polygraph test of ASI rank police officer Anup Dutta in the RG Kar Medical College rape and murder case, ANI reported on Tuesday quoting sources.
Earlier, the probe agency conducted the polygraph test of Sandip Ghosh, former Principal of RG Kar Medical College and Hospital, in connection with the rape and murder of the 31-year-old trainee doctor at Kolkata’s RG Kar Hospital earlier this month.
The CBI had earlier summoned Anup Dutta, who is said to be an alleged associate of the arrested accused Sanjay Roy, in connection with the rape and murder case on August 9.
The CBI is probing if Dutta helped Roy in any cover up of the crime, CBI officials said. As per reports, Dutta was allegedly instrumental in extending various favours to Roy.
The central probe agency is trying to find out if Roy told Dutta about the crime and received any help, according to officials.
A video of Dutta had gone viral, showing the ASI sprinting to reach the CBI Special Crime Branch office in Kolkata to avoid the media. When he reached the CGO complex, reporters could be heard asking him if he knew Sanjay Roy.
So far the CBI is working on the leads that Roy was the only accused in the crime, but involvement of others will only be ruled out after receiving the opinion of AIIMS experts, the officials said.
What Is Polygraph Test?
The CBI has conducted polygraph tests on former principal of RG Kar Medical College Sandip Ghosh. Ghosh underwent a Layered Voice Analysis test last Saturday, followed by a polygraph test on Monday.
A polygraph test can help assess inaccuracies in statements of suspects and witnesses. By monitoring their psychological responses -- heart rate, breathing patterns, sweating, and blood pressure -- investigators can determine if there are discrepancies in their responses.
However, these are not admissible evidence during the trial and can only be used to get further leads in a case.