Hyderabad, Jan. 27: Poachers belonging to the Bawaria tribe are on the prowl in the Nagarjunasagar Srisailam Tiger Reserve at Nallamalas in the state, but the forest department is yet to act. The forest wing has also not implemented the security plan formulated by the National Tiger Conservation Authority (NTCA) for tiger reserves in the state. The NTCA had come out with the plan after a spurt in poaching last year. Poaching has claimed nearly all the tigers in Rajasthan