The adult female rhino was killed at the Old Orang camp of the Park.

According to Divisional Forest Officer of Mangaldai Wildlife Division, SunnydeoChoudhary, forest guards on the evening of June 27 heard a single gunshot of a silencer-fitted firearm and they immediately launched a search operation which continued for the second and third day.

On Thursday morning, the carcass of the dead rhino with a single bullet injury on its body was recovered near the camp. However, the poachers succeeded in taking away the horn. The local veterinary surgeon today carried out the post mortem examination while forest guards are continuing the search operation for recovering the ammunitions used in poaching and to trace out the poachers.

The park - the only habitat of the one-horned rhino on the northern bank of Brahmaputra - has witnessed poaching of 22 rhinos since 2008, while 16 rhinos have died of natural cause.

There were no cases of poaching in the park since 2015.