The Central Bureau of Investigation (CBI) on Thursday initiated a legal process to subject former RG Kar Medical College principal Dr Sandip Ghosh and four other doctors to polygraph tests given the investigators apprehension that they are not speaking truth on the sequence of events that led to the alleged rape-and-murder of a doctor on the hospital campus.

The CBI officials took Ghosh and four other doctors, on duty on the date of the incident, to a special court for seeking permission to conduct the lie detection test on them, agency sources said. Permission from the court is mandatory for the CBI to carry out the polygraph test on a suspect in a case.

CBI sources said that they found discrepancies in the versions of the case narrated by Dr Ghosh and other doctors under scanner.

The case so far

A 31-year-old trainee doctor was raped and killed inside a seminar room of the hospital earlier this month. She was resting owing to her more-than-a-day long shift when the heinous crime took place for which the Kolkata police arrested a civic volunteer, Sanjoy Roy, following the recovery of his bluetooth headphones near the body.

The CBI has been grilling Dr Ghosh, who resigned two days after the incident took place, to piece together what led to the crime.

On August 13, the Calcutta High Court ordered the transfer of the probe from the Kolkata Police to the CBI to get to the bottom of the case which has shook the nation.

The Supreme Court which, on its own, took up the case of rape and murder of the doctor, has hauled up the former Principal and Kolkata Police for the alleged delay and botching up the serious matter.

Even in the hearing of the matter on Thursday, the SC asked why the case of reported as ‘unnatural death’ of the doctor. “Why did the Principal not come to file the FIR? Was anyone stopping him? Why was he transferred to another hospital? The court wants to know the reason for all this,” Chief Justice of India DY Chandrachud wanted to know.

Interestingly, the Kolkata Police had registered a corruption case against the former Principal after a complaint was filed against him in June, this year.