New Delhi, Aug 13 - Prime Minister Manmohan Singh has constituted a four-member ministerial group to look into the dispute over natural gas from the fields of Mukesh Ambani-led Reliance Industries in the Krishna-Godavari basin and help in formulating the government's position on the matter before the courts.

Finance Minister Pranab Mukherjee will head the group, which includes Petroleum Minister Murli Deora, Power Minister Sushilkumar Shinde and Law and Justice Minister Veerappa Moily.

The decision was taken after a series of meetings the prime minister held on the matter with not just his colleagues but also the Ambani brothers - Mukesh and Anil.

One dispute over the gas is between Reliance Industries and Anil Ambani's Reliance Natural Resources, being heard in the Supreme Court, while the other is between the Mukesh Ambani firm and state-run power utility NTPC, which is being adjudicated in the Bombay High Court.

In June, the Bombay High Court asked Reliance Industries to supply 28 million units of gas from the fields to Reliance Natural Resources for 17 years at $2.34 per unit.