Tilottama Case: Mamata ordered what was mixed in Tilottama's sample in the lab that night. Why couldn't Delhi catch up? EX forensics officer leaked so far

The letter reached Tilottama's family a few days ago. Tilottama's father was addressed there. The letter was sent by a former forensic officer. The letter states that the sample taken to take Tilottama's viscera has been altered. Tilottama'