last year chief minister took matter centre hussain told press group discussion put forward forest surround minister rockybulhussain said sunday union ministry personnel public grievances pensions given nod cbi investigation matter forest rector added ministry denial withal give headway economic consumption unmanned aircraft hobby planes would used test trajectory added joint director cbi mumbai keshav kumar impart training wildlife crime investigating forensic sciences plain directors national park northeast central india kaziranga april last year rhinoceros killed poachers state least died floods kaziranga last year seven cases submitted investigation agency i functionary said state government activity first moved centre cbi probe to the lowest degree rhinos killed poachers state far year rhinos poached state guwahati hussain also informed test flight unmanned surveillance aircraft would conducted kaziranga week centre finally give in state government demand cbi dig into rhino poaching cases assam ministry defence mechanism feed clearance assam first state country use unmanned aircraft surveillance kaziranga hussain said first prison term wrote centre requesting cbi probe chief minister tarun gogoi pursuing matter long added state government would extend possible cooperation probe senior forest official said initially cbi requested probe cases rhino poach would possible positive development however known yet cbi begin examine receive decision wildlife institute republic of india scientist k ramesh christie williams wwf international conduct test trajectory monday thursday