The LA County Medical Examiner has released the cause of death for KTLA Entertainment Reporter Sam Rubin.

The M.E. reports that the cause of death for 64-year-old Rubin as ischemic heart disease due to atherosclerotic coronary artery disease (lethal heartbeat due to lack of blood and oxygen flowing to the heart). The manner of death is natural.

“Mr. Rubin arrived at a local hospital with stomach pain the morning of May 10 after calling 9-1-1 as advised by his doctor. He later was pronounced dead in the emergency room at 1103 hours,” the report said.