The primary post-mortem report of Cyrus Mistry, who was killed in a car accident last Sunday, revealed that the former Tata Sons Chairman had suffered injuries to his head and heart and had polytrauma, which occurs when a person sustains multiple injuries to vital internal organs. A final report, which will be out in two days, is expected to specify the exact cause of death. Eight samples were taken from Mr Mistry's body and the entire post-mortem was done on camera. The viscera samples have been preserved. His last rites were conducted at Worli crematorium in Mumbai earlier today.