“The Udumalpet elephant postmortem has been completed and the death by gunshot or poisoning is not indicated by the autopsy findings, so a systematic crime scene investigation has ordered,” principal chief conservator of forests and chief wildlife warden Shekhar Kumar Niraj told DT Next. Vital organ samples have been collected for histopathological and serological examinations. Through the serological tests where the elephant had died naturally due to viral infection, or any other infection can be traced. The samples had also been taken for DNA fingerprinting. Metal detectors are used for detecting the old inserted bullets recovered from the carcass of the elephant, the top official said.