New Delhi, Aug 25 - State-run energy utility NTPC will soon file a petition in the Supreme Court regarding its legal battle with Mukesh Ambani-led Reliance Industries for getting gas from the Krishna-Godavari basin at $2.34 per unit.

'We will be filing our special leave petition within the next six-seven days,' Power Secretary H.S. Brahma told reporters, on the margins of a conference organised by the Confederation of Indian Industry (CII) here.

Two top law officers of the government, Attorney General Goolam E. Vahanvati and Solicitor General Gopal Subramaniam, had advised NTPC to move the apex court at the earliest to secure its interests in the gas row with Reliance Industries.

The Bombay High Court is hearing the matter.