A Kolkata court has granted the Central Bureau of Investigation (CBI) permission to conduct a polygraph test on Assistant Sub-Inspector Anup Dutta as part of the investigation into the rape and murder of a trainee doctor at RG Kar Medical College. Dutta is alleged to be associated with Sanjay Roy, a civic volunteer arrested in relation to the case. The CBI previously conducted polygraph tests on Sandip Ghosh, the former principal of the college, whose inconsistent statements have raised suspicions. The investigation has expanded to include allegations of financial irregularities at the institution. The trainee doctor's body was discovered on August 9, prompting a series of investigations and examinations by the CBI. The agency aims to clarify the circumstances surrounding the case and has been actively gathering evidence since taking over the investigation.