CBI, which is probing the Professional Examination Board-VYAPAM scam of Madhya Pradesh, has registered an FIR in Police constable recruitment exam 2013 case. 18 people have been named as accused in the FIR, who have been booked under different sections of the Madhya Pradesh Recognized Examination Act. <br/><br/>AIR correspondent reports that the probe agency has registered ten FIRs in this scam so far.