For over a decade now, the Directorate of Revenue Intelligence (DRI), an investigative wing in the Department of Revenue of the Union Ministry of Finance, has been investigating companies in the Adani group for their unusual trading activities in cut-and-polished diamonds and studded gold jewellery. Four show-cause notices were issued by the DRI claiming that the group's firms had availed undue benefits to the tune of almost ₹1,000 crore. The case traversed through tribunals and courts till a bench of the Supreme Court recently dismissed the review petition of the government against the Adani