The government today told the Supreme Court that the issues raised by Tata chief Ratan Tata in his petition relating to the Nira Radia tapes require investigation. The government is also understood to have taken a stand that the publication of Tata's conversation with Radia is an issue between the media and the petitioner. The apex court had issued notices on December 2 to the Union Home Secretary, the Union Finance Ministry, the Central Bureau of Investigation, the Central Board of Direct Taxes and the Income Tax Department on Tata's plea seeking probe into the leakage of audio tapes of his telephonic conversation with Radia. The court had also issued notices to the magazines which had published parts of transcripts of the taped conversation. It had given ten days to all respondents to file their reply and had posted the case for hearing on December 13.