The nearly four-year-old big cat was possibly killed with the help of an electric trap last night, PTR Field Director Shubranjan Sen told PTI.
He said the trap has been recovered from the spot and that investigation is underway to identify and arrest the poachers.
"After the patrol party found the dead mammal and passed on the information, top forest officials immediately reached the site," Sen said, adding that the body parts of the leopard were intact.
The incident has sent the alarm bell ringing given that the dead leopard was found near core area.