After resolutely rejecting calls for a CBI probe, Madhya Pradesh Chief Minister Shivraj Singh Chouhan today decided to seek an investigation into thebr murky Vyapam scam by the central agency on a day the Supreme Court agreed to hear petitions in this regard. Under intense opposition attack and mounting public outrage over a string of deaths of people associated with Vyapam, a beleagured Chouhan, a third time chief minister,br announced his decision to recommend to the high court a CBI inquiry.