Why did you resign immediately after incident?: CBI to RG Kar College's ex-principal

The CBI asked Dr Sandip Ghosh, the ex-principal of RG Kar Medical College & Hospital, why he resigned immediately after a doctor was raped and murdered. "What's the reason behind it?" CBI asked Ghosh, who had said while resigning that he was being defamed on social media. The agency also asked him why he didn't keep the crime scene safe.