Kyle Busch's death certificate reveals dramatic 'chain of events' that led to NASCAR star's sudden death…

Kyle Busch had sepsis for only a day before a rapid formation of blood clots led to fatal hemorrhaging and blood loss, according to his death certificate.

The 41-year-old was hospitalized last week after he became unresponsive while test-driving in a race simulator near Charlotte, North Carolina.

It was later revealed that the married father of two had pneumonia, which led to sepsis, and he died last Thursday.

Sepsis, a life-threatening reaction to an infection, caused Busch's blood to clot, which then impeded his organs, according to Us Weekly, which obtained his death certificate. As a result, Busch went into hemorrhagic shock.

The race car driver has been cremated in Mooresville, North Carolina, his death certificate showed.

The Mecklenburg County Medical Examiner's Office did not immediately respond to the Daily Mail's request for the document.