Park officials said the home guard, Sushil, was killed during a gun battle with the poachers, who also managed to chop off the rhino's horn. Rifles and ammunition were recovered from the spot. This is the second case of poaching at Orang which has about 100 rhinos. The last rhino was killed earlier in December, following which the park authorities announced a cash reward of Rs 50,000 for information on poacher Md Joynaluddin alias Junu. The authorities have also pasted Joynaluddin's posters at several places in Darrang, Sonitpur, and Morigaon districts. Tnn