It has been recently reported that James Garner died because of a massive heart attack.
The 'Notebook' actor's death was attributed to acute myocardial infarction and according to his death certificate he suffered from coronary artery disease, TMZ.com reported.
The 86-year-old actor died on July 19 at his Los Angeles home.
Garner was one of the first stars to become mega-successful on both TV and in the movies. Among his many achievements 'Maverick' was a massive TV hit from 1957 - 1962. He also co-starred with Mel Gibson in the big screen version in '94.