Insurgents eager to bolster their war chests here in India's Assam state are also involved, according to police.
Authorities are investigating a recent news report that a Chinese company offered two rebel groups a deal: weapons in exchange for horns and body parts of the one-horned species whose scientific name is rhinoceros unicornis.
Pitted against the poachers, some armed with battlefield rifles, are 152 anti-poaching camps staffed by more than 900 rangers, guards and other personnel -- almost one for every square kilometer of the reserve.
These include a well-armed task force rushed in when the poaching erupted again early last year.
Kaziranga also is ready to deploy drones and satellite surveillance to track the intruders.