Corporate Espionage: Cracking down Mukesh Ambani-led Reliance Industries (RIL), Ruia’s of Essar, Anil Agarwal-led Vedanta group company Cairn India and Anil Ambani-led Reliance Dhirubhai Ambani Group (R-ADAG) on a suspected case of corporate espionage, Delhi Police on Thursday arrested two Oil Ministry officials, RIL staffer and two other middlemen for allegedly leaking classified government documents to energy companies for money – on Friday, former journalist Santanu Saikia was arrested.