The post-mortem report on Prateek Yadav indicated that he experienced a cardiorespiratory collapse due to massive pulmonary thromboembolism, a condition where blood clots obstruct blood flow in the lungs, leading to sudden heart and respiratory failure. Medical experts note that such clots typically originate in the deep veins of the legs or lower body. Symptoms can include abrupt breathlessness, chest pain, and dizziness, potentially resulting in cardiac arrest within minutes. The autopsy preserved Yadav's heart and thromboembolic material for detailed histopathological examination, which will help determine the nature and origin of the clot. Additionally, viscera samples were collected for chemical analysis. Officials stated that all injuries observed were antemortem, suggesting they occurred before death, and some marks may have been caused by trauma related to the collapse. Final medical opinions will be based on the results of the ongoing laboratory examinations.