KTLA’s Sam Rubin’s cause of death is confirmed by a medical examiner

Sam Rubin had a massive blockage of his coronary artery… according to the LA County Medical Examiner’s report on his death.

The ME office says it has determined that KTLA’s famed entertainment reporter has officially died of ischemic heart disease due to atherosclerotic coronary artery disease. Translation: Sam had a heart attack because of the blockage.

As TMZ first reported… Sam was rushed to UCLA West Hills Hospital in May, and we were told he went into full cardiac arrest at home.

Sam had been with KTLA since 1991 and was a fixture in Southern California homes for decades, covering entertainment, movies and TV news… winning multiple Emmys along the way.

He is survived by his wife, Leslieand his 4 children.

Shem was 64.