Firing A high-profile salvo in what he called was the Aam Aadmi Party's battle against corruption, Delhi Chief Minister Arvind Kejriwal Tuesday ordered the state government's Anti-Corruption Branch to register FIRs against Petroleum Minister Veerappa Moily, Reliance Industries chairman Mukesh Ambani, former minister Murli Deora and former DG of Hydrocarbons V K Sibal in a long-running controversy over alleged irregularities in the pricing of natural gas from K G Basin.br br Kejriwal also demanded the Centre put on hold the move to raise gas prices from April 1 until the probe was completed.