FIR has been registered by the CBI against the officials of KS Oils Ltd, a Madhya Pradesh based company in an alleged Rs 938 crore bank loan scam. Searches were conducted on Saturday in Morena and Delhi at the premises of the firm. K S Oils Ltd has manufacturing plants in Morena, Ratlam and Guna in Madhya Pradesh, Kota in Rajasthan and a port-based refinery in Haldia, West Bengal.