Kolkata Rape-Murder: CBI Awaits 3D Mapping Report to Pinpoint RG Kar Crime Scene

Kolkata: The Central Bureau of Investigation (CBI) was awaiting the final report of the 3D laser mapping of the emergency ward building of the RG Kar Medical College and Hospital to ascertain the exact location where the trainee doctor was tortured and killed, a senior CBI officer said on Friday.

Speaking on the conditions of anonymity, the officer told PTI that the central agency was hoping to demonstrate “deliberate tampering of evidence” once the 3D mapping report is complet.

“The seminar hall was merely a shadow of the actual crime scene and the 3D mapping has provided some confirmation of this. We expect the final report to validate our findings," the officer said.

The findings are likely to be submitted by the CBI in its next hearing on the status report of its investigation to the Supreme Court on September 30, another source in the agency confirmed.

The CBI was probing into the alleged rape and murder of the medic at the RG Kar hospital following a Calcutta High Court order.

A specialised agency team used advanced laser scanning technology to conduct 3D mapping of the crime scene on August 18, capturing a detailed view.

If the evidence corroborates with other possibilities, a new sketch of the map of the crime scene will be prepared, the officer added.

Besides the 3D mapping report, the CBI would also use circumstantial evidence that it has managed to gather, such as mobile numbers identified through an analysis of mobile phone tower data, including that of the victim, to pinpoint the scene of the crime, he said.

"We have identified several numbers after analysing the mobile phone tower dump," he said.

A mobile phone tower dump is a collection of phone data from a specific location and time period, often used by law enforcement agencies to aid in crime investigations.

The body of a postgraduate trainee doctor was found in a second-floor seminar room of the hospital's chest department on the morning of August 9, triggering widespread protests from citizens across the board and junior doctors in West Bengal, leading to major changes in Kolkata Police and the state's health department leadership.

(With PTI inputs)