The threat comes from poachers, who kill the rare one-horned rhinoceros for its prized horn whose price in the international market varies from Rs 40 lakh to Rs 90 lakh, and flood which is an annual occurrence in Assam.u00a0

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Early last month, the poachers killed five rhinos in four days taking advantage of the flood waters that submerged 90 per cent of the UNESCO world heritage site.u00a0

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