Petroleum and Natural Gas Minister Veerappa Moily says there is no question of stalling gas price hike from April 1. Mr Moily said Delhi Chief Minister Arvind Kejriwal's FIR against him and others in this connection is unconstitutional. Mr Kejriwal has written to the Prime Minister Manmohan Singh put on hold the hike in gas price from April 1 till a case pending before the Supreme Court is disposed off. Alleging irregularities, the Delhi Chief Minister also asked Anti Corruption Branch to file FIR against Mr Moily, former Minister Murli Deora, Reliance group Chairman Mukesh Ambani and others in this connection.