We are looking for the big fish: Deputy DG, South-Western Region, NCB

Today we have obtained the police custody remand of two more persons so that makes four people in our custody remand: Mutha Ashok Jain, Deputy DG, South-Western Region, NCB.

''We will be asking her (actor Rhea Chakraborty) to join the investigation, and maybe to some other people as well,'' he added. The NCB is the third central agency to join the probe into the death case of Sushant, after the Central Bureau of Investigation (CBI) and the ED.