Chennai, April 21: The Directorate of Revenue Intelligence (DRI) has busted a diesel smuggling racket in the guise of mineral spirit by some operators based in Kakinada in Andhra Pradesh and here, an official statement said on Saturday. Diesel is a restricted commodity for import as per the Foreign Trade Policy and can be imported only by oil marketing companies. In a statement issued on Saturday, the Finance Ministry said the diesel was being brought from Dubai in huge quantitites regularly through containers at Chennai Port for further illegal sale in Tamil Nadu, Andhra Pradesh and Telangana.