Vyapam scam: CBI files chargesheet against 490 accused, says no basis in Digvijaya's allegations against MP CM Shivraj Singh Vyapam scam: CBI files chargesheet against 490 accused, says no basis in Digvijaya's allegations against MP CM Shivraj Singh The CBI Said There Is No Basis In Allegations Made By Digvijaya Singh That The Hard Disk Which Was Seized Was Tampered With. News Nation Bureau | Edited By : Vikas Mehta | Updated on: 31 Oct 2017, 10:11:38 PM New Delhi: The Central Bureau of Investigation (CBI) on Tuesday filed a chargesheet against 490 accused in connection with Vyapam scam. The central investigation agency gave virtual "clean chit" to Madhya Pradesh Chief Minister Shivraj Singh Chauhan, saying that no mention of 'CM' in the hard disc which was seized.