In a somber moment, the NASCAR community gathered around Kyle Busch's hauler on Saturday morning as his renumbered RCR car was the first to unload.

Kyle Busch's family released a statement Saturday morning, announcing the cause of his death on May 21 at age 41.

NASCAR driver Kyle Busch died from complications of severe pneumonia that advanced into sepsis, his family said Saturday, after receiving the official medical evaluation, the Associated Press reported.

NASCAR held a moment of silence for record-setting driver Kyle Busch ahead of the Craftsman Truck Series race at Charlotte Motor Speedway.

A 911 caller described the medical emergency Kyle Busch was experiencing while reportedly in a racing simulator in North Carolina on Wednesday. Tom Hanson reports.

Kyle Busch's family has revealed the legendary NASCAR driver's cause of death. The racing pro died on May 21 at the age of 41. He died after his severe pneumonia progressed into sepsis, his family said in a statement.

NASCAR legend Kyle Busch died from severe pneumonia, which progressed into sepsis ... TMZ has confirmed. According to a statement from Kyle's family, he passed away "after severe pneumonia progressed into sepsis,

The cause of death for legendary NASCAR driver Kyle Bush, who died Thursday at age 41, has been released. Here's what we know so far. (AP Photo)