The MP has been questioned multiple times by the agency in the past in connection with this case, in which his father and Congress leader P Chidambaram has also been quizzed.
The senior Chidamabaram had been arrested in this case by the CBI and the Enforcement Directorate (ED) last year and had to spend over 100 days in custody before he was released in early December.
Karti too was arrested in this case by the CBI.
It is understood that Karti is being questioned on some fresh leads obtained by the agency, besides being confronted him with the statements of other witnesses and accused in the case.
In 2018, the ED had attached Karti's assets worth Rs 54 crore that were located in India, the UK and Spain in connection with the INX Media case.
Agency sources had earlier alleged that P Chidambaram and Karti were the "beneficial owners" of several shell firms that were incorporated in India and abroad in connection with a Foreign Investment Promotion Board (FIPB) approval given to the INX Media group during the former's tenure as the Union finance minister.
The central agency's probe found that the alleged kickbacks so received by the father-son duo were used to meet their "personal expenses".
They put the money in over two dozen foreign accounts and purchased multiple immovable assets in countries such as Malaysia, the United Kingdom and Spain among others, according to the ED.
Business Standard has always strived hard to provide up-to-date information and commentary on developments that are of interest to you and have wider political and economic implications for the country and the world. Your encouragement and constant feedback on how to improve our offering have only made our resolve and commitment to these ideals stronger. Even during these difficult times arising out of Covid-19, we continue to remain committed to keeping you informed and updated with credible news, authoritative views and incisive commentary on topical issues of relevance.
We, however, have a request.
As we battle the economic impact of the pandemic, we need your support even more, so that we can continue to offer you more quality content. Our subscription model has seen an encouraging response from many of you, who have subscribed to our online content. More subscription to our online content can only help us achieve the goals of offering you even better and more relevant content. We believe in free, fair and credible journalism. Your support through more subscriptions can help us practise the journalism to which we are committed.
Support quality journalism and subscribe to Business Standard.