Kyle Busch's death certificate reveals new details: reports

Kyle Busch celebrates in victory lane after winning the Monster Energy NASCAR Cup Series Toyota Owners 400 at Richmond Raceway on April 21, 2018 in Richmond, Virginia.  (Photo by Matt Sullivan/Getty Images)

New details are being revealed about 2-time NASCAR champ Kyle Busch, who died last week after severe pneumonia progressed into sepsis.

Dig deeper:

Us Weekly reported that he was cremated following his death, citing his death certificate. According to the outlet, the cremation took place in Mooresville, North Carolina, roughly 30 miles outside Charlotte.

RELATED: Kyle Busch dies: 2-time NASCAR champ was 41

PEOPLE reported that Busch had been battling illnesses for several weeks before his death.

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Kyle Busch cause of death revealed as sepsis

Kyle Busch's family reveals his cause of death as sepsis caused by severe pneumonia. 

The backstory:

Busch died at 41, a day after passing out in a Chevrolet simulator.

Busch was thought to have had a sinus cold while racing at Watkins Glen on May 10 and radioed in to his team saying that he needed a "shot" from a doctor after the race. However, he bounced back to win the Trucks Series race at Dover and then he finished 17th in the All-Star race.

RELATED: Kyle Busch's cause of death released by family

Busch, who was preparing to race Sunday at the Coca-Cola 600 at Charlotte Motor Speedway, was testing in the Chevrolet racing simulator in Concord when he became unresponsive and was transported to a hospital in Charlotte, several people familiar with the situation told The Associated Press.

During the emergency call placed late that afternoon, an unidentified caller calmly told the dispatch: "I’ve got an individual that’s (got) shortness of breath, very hot, thinks he’s going to pass out, and is producing a little bit of blood, coughing up some blood."

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Iconic NASCAR driver Kyle Busch dies at 41

Legendary NASCAR driver Kyle Busch died after being hospitalized with an undisclosed "severe illness." Busch was a two-time Cup champion and undoubtedly a future Hall of Famer. He'd been in the Cup Series since 2004, making 762 career starts with 63 wins. NASCAR, the Busch family and Richard Childress Racing announced his passing, but did not offer a cause of death.

The caller said Busch was lying on the bathroom floor inside the complex and told dispatch "he is awake," according to audio provided by the Cabarrus County Sheriff’s Office. The man then gave directions on where emergency responders should go and asked that they turn off any sirens upon arrival.

Big picture view:

Sepsis is considered a life-threatening medical emergency that occurs when the body has an extreme, overactive response to an infection, causing the immune system to damage its own tissues and organs, according to the Centers for Disease Control and Prevention.

RELATED: Kyle Busch's cause of death released by family

Typically the immune system releases chemicals to fight off pathogens like bacteria, viruses or fungi, but with sepsis the response goes into overdrive. The results can cause widespread inflammation, form microscopic blood clots and make blood vessels leak.

The Source: Information in this story came from reports published by Us Weekly, PEOPLE and The Associated Press. This story was reported from Los Angeles. 

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