Billy Mays died of pulmonary embolism

Billy Mays, the man with the booming voice and was known for Oxiclean was first suspected to have died due to cardiac arrest.

Here is the news:

Pitchman extraordinaire Billy Mays died from a pulmonary embolism, according to the coroner in Tampa, Fla., who announced preliminary autopsy results at a press conference Monday. Evidence of heart disease was also found.

According to Hillsborough County Medical Examiner Vernard Adams, Mays "had an enlarged heart, a thickening of the wall of the ventricle which takes blood to the heart." Final results of the autopsy and cause of death will not be known for several weeks.

Mays, 50, the bearded man with the booming voice best known for his ubiquitous OxiClean ads died in his sleep in his Florida home over the weekend.