Delhi Government's 2012 notification banning manufacture, sale and usage of plastic bags in Delhi has come under challenge, with the National Green Tribunal today seeking the response from the Centre, Delhi government and others on the matter.<br/><br/>A bench headed by NGT Chairperson Justice Swatanter Kumar issued notices to Ministry of Environment and Forests (MoEF), Delhi Government, Delhi Pollution Control Committee and Delhi Cantonment Board while seeking their reply before February 13,the next date of hearing. <br/><br/>The matter was transferred from Delhi High Court to the NGT, in December last year, which had said that the tribunal was already hearing pleas against the use of plastic carry bags in various areas of Punjab and Haryana.