New details about Hulk Hogan's health have emerged after his death. Hogan's cause of death was officially ruled a heart attack, with medical documents also revealing his history with leukemia.

Hulk Hogan was battling leukemia at the time of his death, according to medical records obtained by PEOPLE on Thursday, July 31. His cause of death was also shared, revealing he died of a heart attack.

According to a report by Pinellas County Forensic Science Center in Florida, Hogan died from acute myocardial infarction, which is more commonly known as a heart attack. The cardiac arrest was deemed to have been the result of natural causes. The New York Post was first to report Hogan’s cause of death.