Officials here however claimed they had got orders from the authorities concerned in Chennai to burn the carcass.
The tigress was found dead along with a leopard near Mayar, coming under Mudumalai Tiger Reserve (MTR) under mysterious circumstances in April 2011.
While the leopard's body was burnt a day later, the carcass of the big cat was kept in a freezer after the viscera was sent to Chennai for autopsy.
However, no arrest has yet been made in this connection.
Officials claimed they had got orders from the authority in Chennai to burn the carcass.