The apex court had decided on in-camera hearing after it found that many controversial and sensitive information and names of people figure in the various reports disclosure of which in public domain could harm national interest and could tarnish the image of people till they were established.
The conversations were recorded as part of surveillance of Radia's phone on a complaint to the Finance Minister on November 16, 2007 alleging that within a span of nine years she had built up a business empire worth Rs 300 crore.
The government had recorded 180 days of Radia's conversations—first from August 20, 2008 onwards for 60 days and then from October 19 for another 60 days.