Updated with official cause of death: In a report obtained by Ktla, the Los Angeles Medical Examiner said the station’s former entertainment reporter, Sam Rubin, suffered from “ischemic heart disease due to atherosclerotic coronary artery disease.” His manner of death was listed as “natural.”

Per the station, Rubin, 64, was experiencing stomach pain on the morning of May 10 and got himself to the hospital. The journalist was pronounced dead in the emergency room there just after 11 a.m.

Previously on May 10: Sam Rubin, who was a Los Angeles TV news mainstay as the longtime entertainment reporter for Ktla and regular interviewer on red carpets, died today, the station announced. He was 64.

Rubin’s family confirmed he died of a heart attack, Ktla reported. He was last on the air Thursday morning and showed no outward signs of illness, according to his co-workers. He had called in sick on Friday.