In a report to the police, the SDM, who had recorded the statements of Sunanda's brother, son, Tharoor and his staff, had said that no family member suspected any foul play in the death.
The autopsy report had mentioned more than a dozen injury marks on Sunanda's both hands and an abrasion on her cheek which suggests a "use of blunt force", besides a "deep teeth bite" on the edge of her left palm.
Viscera samples were preserved after the autopsy at AIIMS and were sent to CFSL for further tests.
The search and seizure memorandum of the police, which is a part of the report, mentioned finding of mix of two drugs - Alprazolam and Excedrin.
Excedrin is a combination of acetaminophen, aspirin, and caffeine while Alprazolam is an anxiolytic.
The probe into the case was handed over to the Crime Branch on January 23. However, the case was transferred back to the South District police two days later on January 25.
