The National Green Tribunal (NGT) has issued notice to Centre on alleged air pollution caused by diesel-run ships in the Indian territorial waters. <br/><br/>The tribunal was hearing a plea filed by a petitioner seeking directions to monitor the pollution caused by ships and vessels entering the Indian maritime coastal waters and submit a report to the NGT.<br/><br/>A bench headed by NGT Chairperson Justice Swatanter Kumar issued notices to the ministries of Environment and Shipping, Central Pollution Control Board and Directorate General of Shipping seeking their replies before August 17.