The Waukesha County Medical Examiner's office reports that after conducting an autopsy today, all evidence suggests that James "J.T." Hilligoss died of a natural event related to a cardiac abormality.
The medical examiner's office noted that the the conclusion was pending further study.
Hilligoss, 17, and a junior at Arrowhead High School, was found dead in his bedroom on Monday morning.
Tuesday's autopsy dispelled the rumor that Hilligoss died as a result of a concussion suffered while snowboarding the day before. His parents told Lake Country Publications that there was no truth to those rumors and that he suffered no concussions while snowboarding.