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.

It was meant to be a busy summer for Hulk Hogan, with a fast-growing beer company and new wrestling league to promote. Health issues, meanwhile, were plaguing Terry Bollea, the aging Tampa Bay resident who portrayed the globally-known icon.

Wrestler Hulk Hogan's cause of death was confirmed after he suffered cardiac arrest and died at age 71 on July 24