The CBI had registered its case on May 15, 2017, alleging irregularities in a Foreign Investment Promotion Board (FIPB) clearance granted to INX Media group for receiving overseas funds of Rs 305 crore in 2007 during Chidambaram's tenure as finance minister.
Karti Chidamabaram, son of former union minister and senior Congress leader P Chidamabaram, is a sitting MP from Sivaganga Lok Sabha seat in Tamil Nadu and was arrested in the INX case both by the CBI as well as the ED.