After more than two years of stacking up evidence against Karti Chidambaram, the CBI arrested him from Chennai Airport on February 28 in connection with a probe into alleged bribery. The case dates back to when Karti’s father P. Chidambaram was finance minister in the Congress-led UPA-1. In an FIR filed last May, the CBI claimed that INX media founder, Indrani Mukherjee, had paid Karti a bribe of Rs 3.6 crore to manage a Foreign Investment Promotion Board (FIPB) approval for 26 per cent FDI in the media company. As per the FIR, INX paid Karti-owned Chess Management Services Rs 10 lakh for “management consultancy charges toward FIPB notification and clarifications”. The remaining Rs 3.5 crore was allegedly paid to a firm named Advantage Strategic Consulting, though Karti’s legal counsel Abhishek Manu Singhvi says only four invoices reportedly recovered from the computer of Karti’s chartered accountant, Bhaskaran, were produced by the CBI and not evidence of the actual remittances.