The Central Bureau of Investigation filed a chargesheet and arrested eight former officials of IDBI Bank and Kingfisher Airlines earlier this week, including former CMD of IDBI Bank Yogesh Aggarwal in the loan default case related to Vijay Mallya. The liquor baron, who was named as an absconder, was chargesheeted as well. But what exactly was the role of the former IDBI top boss and how were rules flouted to grant a 1,000-crore loan to Kingfisher?