Recently deceased rocker Tom Petty’s death certificate was filed in LA County. According to TMZ, it does not list the Singer’s cause of death. The certificate states that Petty passed away at 8:43PM at UCLA on October 2nd. However, the immediate cause of death was listed as “deferred.” This means that officials are waiting for the finished autopsy to officially declare the cause of death. As previously reported, Tom Petty was rushed to the hospital after going into cardiac arrest. He was 66 years old.