Operations were launched in the Park since the killing of a rhino on Sunday last and six persons were arrested over the last three days, Park officials said here today.
A rifle was also recovered during the operation and the poachers were remanded to judicial custody.
Operations were continuing both within and around the Park, famed for its one-horned rhino, following inputs about the presence of more poachers in the area.
Eleven rhinos have been killed and their horns removed by poachers in the Park during the year.