Bhopal, June 26 (ANI): Lawyer Ajay Tiwari on Thursday said that a case has been registered against Congress’ spokesperson KK Mishra under Section 500 of IPC. MP's Chief Minister Shivraj Singh Chouhan had filed a defamation case against KK Mishra for naming his family members, including wife Sadhna Singh Chouhan, in the PMT admission exam scam of the MP Professional Examination Board (MPPEB).