Famed Bond villain Richard Kiel died from a serious heart problem, according to a new report.

The towering actor, who played steel-toothed killer Jaws in two 007 films, passed away last month (Sep14) at a hospital in Fresno, California just days after he was admitted with a broken leg.

Now editors at Tmz.com report the star's death certificate lists a possible heart attack as the cause of the tragedy.

The document also reportedly states Kiel was suffering from coronary artery disease and reveals his leg injury was a contributing factor but not a primary cause of death.