Ralphie May's cause of death has been revealed.
The stand-up comedian died from hypertensive cardiovascular disease, Nevada's Clark County Coroner's office tweeted on Wednesday. May died of natural causes.
May died in October from cardiac arrest after battling pneumonia. He was 45.
"We are heartbroken to announce the untimely death of our friend, Ralphie May," the comedian's rep said in a statement to ET at the time. "Ralphie had been battling pneumonia and had canceled a handful of dates over the last month in an effort to recover."
May is survived by his wife, comedian Lahna Turner, and their children, April June and August James.