The CBI has sought permission from a Kolkata court to conduct a polygraph test on city police assistant sub-inspector Anup Dutta who was said to be close to Sanjay Roy, the arrested accused in the rape and murder of a trainee doctor at RG Kar medical college, officials said Tuesday.
The CBI is exploring if Dutta helped Roy in any cover up of the crime, they said.
According to reports, Dutta was allegedly instrumental in extending various favours to Roy, they said.
The central probe agency is trying to find out if Roy told Dutta about the crime and received any help, they said.
They said the court would decide the application for a polygraph test after seeking Dutta's consent on the issue.
The CBI completed polygraph tests on former principal of the medical college Sandip Ghosh on Tuesday, the third day of subjecting him to a series of Deception Detection Tests (DDT), they said.
He underwent a Layered Voice Analysis test on Saturday, followed by a polygraph test on Monday. The tes
