The Crime Branch put dismissed assistant sub-inspector Gopal Das the prime accused in ex-minister Naba Kishore Das`s murder case to forensic psychological assessment and LVA test after he was brought to police remand for four more days, a senior officer said.

The forensic psychological assessment is done to identify, operationally define, and measure a person`s adaptive and maladaptive behaviours and treatment goals.
Similarly, the LVA test is done to ascertain various types of stress, cognitive processes and emotional reactions that expose the emotional profile and sensitive discussion points of the accused.