Professional wrestler Hulk Hogan died of a heart attack last week. That's according to a medical examiner’s report released on Thursday.

Hogan's leukemia diagnosis, a type of cancer affecting white blood cells, had not been publicly disclosed prior to his death.

Brooke Hogan is speaking out following the death of her father, Hulk Hogan, with whom she shared a complicated but loving relationship leading up to his death. In a lengthy, emotional letter posted to Instagram on Tuesday (July 29),