Activists from India's opposition Congress party shout slogans during a protest demanding resignation of Madhya Pradesh state Chief Minister Shivraj Singh Chouhan in Bhopal, India, July 7, 2015. The deaths of a number of witnesses in a massive fraud case surrounding cheating at college and government jobs has become the latest source of discomfort for India's ruling party, already on the defensive over influence trafficking allegations. Investigators say thousands of people got jobs or medical degrees from systematic exam cheating that generated millions of dollars in bribes in the state of Madhya Pradesh. At least 36 people connected to the case in the Bharatiya Janata Party (BJP) run state have died since the scam was first brought to light. More than 2,000 have been arrested in relation to the scam. Chouhan, a popular BJP leader, denies wrongdoing. But on Tuesday he buckled to pressure and said the inquiry should be handed to the Central Bureau of Investigation to avoid suspicion of political meddling. The centre poster reads: "Whoever tries to speak the truth will be killed" (speech on left in poster) Vyapam killer avenue (road sign in poster)" REUTERS/Raj Patidar