Blast injury is becoming more common in the non-military population but it is still rare to see such injuries and deaths unrelated to terrorist acts. The exact mechanisms involved in blast injuries are unclear. Civilian physicians and surgeons need to have a basic understanding of the patho-mechanics and physiological effects of blast injuries. We report a case where a 31-year-old male accidentally detonated a diesel storage tank. His autopsy findings provide useful information for those who investigate explosive-related deaths.