CBI has registered a fresh case of cheating and corruption in coal block allocation scam against unknown officials of Karnataka Power Corporation Limited (KPCL) and others for allegedly ignoring joint venture conditions to give pecuniary gains to private partners. The KPCL was allocated six coal blocks Kiloni, Manora Deep, and Baranj I-IV in 2003 under NDA government. CBI has said the agency teams today swooped down at one location each in Bangalore, New Delhi, Kolkata, Nagpur in connection with the case.