Celebrity / wrestling Ultimate Warrior’s Cause of Death: Massive Heart Attack No toxicology results yet, but death listed as 'natural' By Evann Gastaldo, Newser Staff Posted Apr 15, 2014 8:25 AM CDT Copied In this Monday, April 7, 2014 photo, James Hellwig, better known as The Ultimate Warrior, performs for the audience during WWE Monday Night Raw at the Smoothie King Center in New Orleans. (AP Photo/NOLA.com, David Grunfeld) Ultimate Warrior, the wrestling icon who collapsed and died last week just after his return to the WWE, suffered a massive heart attack, Radar reports. The medical examiner's office listed his cause of death as "natural," due to heart disease, but will still conduct a death investigation. "They plan to do a full medical history report as well as a toxicology report to see if he had any drugs in his system when he died," says a source inside the office. "They don’t just want to know the cause, its also important for them to figure out 'how he got there.'" (More wrestling stories.) Report an error