New Delhi The Central Bureau of Investigation (CBI) probing the coal scam finally started questioning the accused named in its first information reports (FIRs) on Monday.

The CBI, which had booked five private firms for misrepresenting facts to get coal blocks allocated, grilled Arvind Jayaswal, a director of Nagpur-based AMR Iron and steel and brother mining baron Manoj Jayaswal, for over six hours at its Delhi headquarters on Monday.