The cause of death for “ALF” actor Benji Gregory has been revealed.

The former child star died of “environmental heat exposure in the setting of hepatic cirrhosis,” the medical examiner’s office in Maricopa County, Arizona, said Friday, according to multiple reports.

Gregory’s manner of death was ruled an accident.

The actor died on June 13 at the age of 46. He was found in his car.

Gregory’s sister, Rebecca Hertzberg-Pfaffinger, confirmed his death in a Facebook post via her brother’s page on July 10.

“It is with a heavy heart my family has suffered a loss way too early,” she wrote.

“Ben was a great Son, Brother and Uncle. He was fun to be around and made us laugh quite often. Still, going through his things, I find myself laughing at little videos or notes of his, in between crying. My brother Ben was found in his car, along with his beloved service dog Hans, deceased on June 13. We believe he went there the evening of the 12th to deposit some residuals. (Found in his car) and never got out of the car to do so. He fell asleep and died from vehicular heatstroke.”

Born Benjamin Hertzberg, Gregory played young Brian Tanner on “ALF” for all four season of the NBC hit’s 1986-1990 run.

This is a developing story …