Police in Florida are still investigating the death last month of professional wrestling icon Hulk Hogan from what the medical examiner concluded was a heart attack.

Nobody expected the Hulkster’s final chapter to read like this. Hulk Hogan, the wrestling giant who once seemed larger than life, died on July 24 at the age of 71. Doctors initially blamed cardiac arrest, but new claims now suggest something far more troubling.

It sounds like the cause of Hulk Hogan’s death is related to a surgeon severing the phrenic nerve that helps control breathing.