While the officers investigating in to the death of IAS officer Anurag Tewari are still struggling to connect the missing dots, the reports of a blood clot on his face and presence of undigested food in his body implies that it was not a natural death.

Reports suggest that Tewari's nose and chin had blood marks, which primarily suggested that he could have been attacked. His body was found by the police at around 5.45 am near his guest at Hazratganj in Uttar Pradesh. However, it must be noted here that before the police could reach the spot - at least 15 minutes - people had gathered at the spot and the chances of tampering with any crucial evidence cannot be ruled out. It was policeman Harveer Yadav, who responded to the call first, reports The Times of India.

Also, the traces of undigested food found in Anurag's body has become a matter of concern for investigators.

According to the postmortem report, 520 ml of undigested food was found in his body and also his bladder was full. Normally, the stomach empties within two hours. Assuming that Anurag had oily food in his dinner around 10 pm and, he went to room with his batchmate - PN Singh, vice-chairman of Lucknow Development Authority around 11 pm.

Considering these facts, it may not take more than four hours for the food to get it digested (considering it was oily food). But when Anurag's body was found, there was a trace of undigested food (520 ml) in his body which clearly indicates his death between 2 am and 3 am as oil food takes a longer time to break, reports The Times of India quoting a forensic expert. However, now, the viscera samples have been sent for further examination.

Earlier, the Lucknow police had tried to term it a natural death and the postmortem report too said asphyxiation. However, it had failed to mention the causes of asphyxiation. This had forced the family members to demand for a CBI inquiry by the UP government which was considered too.