Forest guard Nomal Boro said the poachers opened fire and then tried to flee toward the Brahmaputra River.

WSJ: Armed Guards, Drones to Protect India's Rhinos

Kaziranga, a 330-square-mile expanse on the southern bank of the swirling Brahmaputra River, which flows from the Tibetan Plateau to the Bay of Bengal, is one of the final sanctuaries of rhinoceros unicornis, the one-horned rhino.

WSJ: Armed Guards, Drones to Protect India's Rhinos

The early British planters could not find workers locally so labour contractors collected not just men, but women and children too, from distant parts of India and sent them on boats up the Brahmaputra river which flows through Assam.

BBC: Magazine

England has been intimately connected to this corner of India since 1826, when the British began planting tea estates all along the river valley of the mighty Brahmaputra, which courses out of the Himalayas and flows through Assam on its way to the Indian Ocean.

FORBES: Off the Beaten Track: Kaziranga National Park, India