Andy Griffith died of a heart attack
HollywoodNews.com: Andy Griffith passed away this week at the age of 86 years old, and it seems the cause was a heart attack.
On his death certificate, it has been reported that he suffered a heart attack 24 hours before his passing, states UsMagazine.com. He had allegedly been dealing with coronary artery disease and hypertension before his passing.
He left behind his third wife, Cindi Knight.
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