The wildlife smuggler was suffering from lung cancer and other ailments and was admitted to the SMS Hospital here on March 14, hospital sources said.
Sansar Chand, who was around 60, was facing trial in cases related to wildlife and was brought to Alwar from Tihar jail hospital for a hearing in the court of Additional Chief Judicial Magistrate on March 14.
After hearing in the case of a tiger's killing in 2005, he was admitted to Alwar district hospital from there was referred to SMS on the same day.
Sansar Chand, his associates and relatives were considered responsible for the killing of all tigers in Sariska. He was also accused of smuggling body parts of the wild animals.