RG Kar incident: CBI questions close aide of arrested ex-principal Sandip Ghosh

CBI officers have begun questioning Dr. Birupaksha Biswas, who is allegedly linked to the arrested former principal of RG Kar Medical College, regarding the rape and murder of a woman doctor. Biswas was present at the hospital on August 9 when the body was found. He is also accused of threatening students at various medical colleges.