CBI has started a preliminary enquiry to probe the mysterious death of Madhya Pradesh Governor Ram Naresh Yadav’s son Shailesh Yadav whose name had figured in the multi-crore rupee Vyapam scam. Shailesh was found dead under mysterious circumstances at his official residence in Lucknow on 25th March this year. His name had cropped up in the Madhya Pradesh Professional Examination Board for allegedly fixing the recruitment of 10 candidates as Grade III teachers.