This order, the sources said, could be cited by the agency to nail Kanimozhi, Raja and other accused in this case.
The agency has already questioned the DMK leader and Raja in this regard.
It had summoned her and others for questioning about the alleged transfer of Rs 200 crore to the TV channel, in which she and Kalaignar TV MD Sharad Kumar each hold 20 per cent stake.
The ED had earlier also scrutinised documents related to both the DMK MPs incomes, properties and personal investments.
It had also initiated attachment proceedings under PMLA against other individuals and certain telecom firms involved in the case.
Besides the cases of Raja and Kanimozhi, similar probe is underway under the provisions of the anti-money laundering Act against Asif Balwa, Director of Kusegaon Fruits and Vegetables Pvt Ltd, Rajeev Agarwal and Karim Murani of Cineyug Films (Pvt) Ltd.
