"TMZ has learned Ralphie died at a private residence in Vegas Friday morning. We're told he had been battling pneumonia for 6 weeks and died of cardiac arrest. According to his rep, someone in the residence discovered his body. He had performed Thursday night at Harrah's in Vegas."
http://www.tmz.com/2017/10/06/ralphie-may-dead/
He was 45.
RIP Ralphie, your first couple of comedy specials were great.