Union Home Minister Rajnath Singh on Sunday asked Madhya Pradesh Chief Minister Shivraj Singh Chouhan to get investigated the mysterious death of a Delhi-based journalist, an official said."The home minister spoke to the chief minister of Madhya Pradesh. We don't have details of the conversation but he asked him to get the issue investigated thoroughly," a home ministry official told IANS.Rajnath Singh is understood to have expressed concern over the recent deaths over the Vyapam scam, especially that of the journalist who died on Saturday, the official said.Journalist Akshay Singh, who was in Jhabua on Saturday to talk to the family members of a scam-accused woman, suddenly fell ill and began foaming at the mouth. He was taken to a hospital, where doctors declared him dead.On Sunday, Arun Sharma, the dean of a medical college in Jabalpur in Madhya Pradesh who was also connected with the probe into the same scam, was found dead in a hotel near the Indira Gandhi International Airport in Delhi.