Nagpur: The forensic reports of tigress T1 released on Saturday revealed that there was no trace of tranquillisers in any organs implying that the dart was not shot but planted.

The tranquillisers (ketamine and xylazine) detected in exhibit numbers 3a, 3b and 4 are positive, analysis of the report suggested.

However, wildlife experts, who have gone through the report said, “xylazine is an analogue of clonidine and an agonist at the A2 class of adrenergic receptor.”

It is used in animals such as cattle and horses for muscle relaxation, pain reduction, sedation and anaesthesia.

Ketamine, on the other hand, is a dissociative drug used in veterinary medicine and human anaesthesia. Such drugs work hallucinogens to make a person or animal feel detached from reality.

They are also impossible to detect in the muscles after 28 days and hence the meat sample withholding period is 28 days post the use of it. In the case of Avni, the analysis began on November 26 to prove that it was detected before the 28 days. Tigress Avni was shot on November 2.

The report said that the analysis took place from November 26 to December 5. However, the use of anaesthetic drugs is surprising to the forensic experts.

The report comes days after the National Tiger Conservation Authority (NTCA) committee had submitted its report giving way to more doubts.

According to reports, the primary question being asked is why was there a delay in starting the testing when the sample was sent almost a month ago. The report does not mention the method used in the analysis nor does it mention anything about the quantitative and qualitative analysis.