Unabated biopiracy in Assam has caused concern among environmentalists as it poses a serious threat to the state's rich forest resources. That piracy is being carried out in a most skillful manner and many plant and animal species have become extinct is a matter of urgent concern, a recent report prepared by the Assam Science Society says.The report analyses various aspects and raises the fear that posterity would never know how rich the state has been in both flaura and fauna. As of now bio-pirates operate in the unorganised sector posing problems for the authorities to identify the culprits.