The CBI has registered two FIRs in connection with corruption allegations levelled by former Jammu and Kashmir Governor Satya Pal Malik in the awarding of contracts for group medical insurance scheme for government employees and work related to Kiru hydroelectric power project in the erstwhile state, officials said on Thursday. The agency has booked Navin Kumar Chaudhary, former chairman of Chenab Valley Power Projects (P) Ltd, M S Babu, former MD, M K Mittal and Arun Kumar Mishra, former directors and Patel Engineering Ltd.