This CBI file, which runs into nearly 1,200 pages, has documents purporting to show that Chidambaram had cleared over 60 percent equity dilution in Unitech. Norway-based Telenor had bought shares worth Rs 6,200 crore even before Unitech rolled out its services, reports Firstpost.com.

The CBI has mentioned this in its chargesheet as well, but this file puts it on record that Chidambaram was the last person to clear the Unitech file for equity dilution.