ET Exclusive: Why ED keen to seek custody of Karti Chidambaram?

Enforcement Directorate suspects involvement of more companies allegedly used as "fronts" by Karti Chidambaram, son of former finance minister P Chidambaram, to receive "kickbacks" for ensuring official nod for foreign direct investment proposals by using his influence in the finance ministry. Raghav Ohri talks about his news scoop and explains what it could mean for the father-son duo.