The Centre had on Monday handed over a 14-page document titled "Details of the steps in the decision making process leading to the award of 36 Rafale fighter aircraft order" to the petitioners in the case. The government had also filed in the court in a sealed cover the pricing details of the Rafale jets. Hearing is currently underway in the top court. Advocate Manohar Lal Sharma began the initial arguments in the case. He told the court that the inter-government agreement was 'illegal' and sought an investigation.