CBI on Tuesday registered five cases in connection with the alleged scam in allocation of coal blocks and conducted searches in nearly 30 places across the country. After registering five FIRs in court, CBI teams fanned out to nearly 10 cities, including Delhi, Mumbai, Kolkata, Patna, Hyderabad, Dhanbad and Nagpur and searched premises of owners of some companies. The companies named in the FIR by the CBI are Vini Iron and Steel, Nav Bharat Steel, JLD Yavatmal, which is said to be linked to the family of Congress MP Vijay Darda, JAS infrasrtucture of Abhijeet Group and AMR Iron and Steel and their directors and unknown government officials, the CBI said. The agency, which had registered a Preliminary enquiry in June this year, has slapped charges of cheating and suppression of facts against the companies.