'Signs of intra-cranial bleeding on the scalp were evident. He fell on his back maybe under the influence of a drug or alcohol,' an official said, quoting the report.

Whi1e the investigating agencies in both states are to confirm whether the fall was accidental, they are also clueless about how the constable landed up in Madhya Pradesh and in what circumstances he died.

The investigators are confused about how he arrived in Jaitpur village since it has no link with the Delhi-Hyderabad train or bus routes.

S.S. Chahal, the investigating officer, said that the circumstantial evidence and first autposy report have led police to believe that the constable died of either a heart attack or fits.

'We were trying to get call details on his mobile phone. As the SIM card from his mobile is missing, we have contacted the service provider to give us details of various tower locations starting from Noida to know the places he had visited before finally coming to Bhind,' said Chahal.

'Initial enquiries have revealed that Muralinath had left Dubey's house in Noida July 28 to buy medicines,' said another officer.

Sources said Dubey had managed to send around three dozens constables from the armed reserve to serve his family in Noida and Muralinath was one of them. Apart from cooking and driving, these men reportedly washed clothes and fetched vegetables for the family on rotation basis.