A day after the 66-year-old legendary comedian passed away, his rep confirms to E! News that the star's doctors believe he died from a heart attack. At the time of his unexpected death, Shandling had no history of heart problems and was not suffering from any illness. He was considered healthy and was speaking to people the morning before he died.
According to the coroner's office, an autopsy will not be performed. Instead, doctors will determine the official cause of death.
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