The National Green Tribunal (NGT) has identified more than 50 illegal plastic recycling units operating in Bhopal, warning that they pose a serious health and environmental risk to nearly 2 lakh residents. The Central Zone Bench of the NGT in Bhopal, headed by Justice Sheo Kumar Singh and expert member Sudhir Kumar Chaturvedi, issued directives to Madhya Pradesh state authorities and urban local bodies to take urgent measures.