Tom Petty's Cause Of Death Is A Mystery, Death Certificate Says

Singer Tom Petty’s cause of death is a mystery, according to his death certificate Tuesday. The official document listed his official cause of death as "deferred."

The singer’s death certificate, filed in Los Angeles, does not identify an official cause of death, according to TMZ. A "deferment" means that officials are waiting for final test results to come back from the lab to declare an official cause of death.

The document confirmed that Petty died 8:43 p.m. on Oct. 2 at UCLA Santa Monica, according to TMZ. Officials rushed the singer to the hospital Oct. 1, after his family found him unresponsive in his Malibu home. He was not breathing and suffered a full cardiac arrest, according to reports.

Petty, 66, apparently had a pulse when first responders arrived. After officials determined he was in critical condition, they placed him on life support.

The Los Angeles Police Department confirmed on Twitter Oct. 2 that it was unsure of the signer’s condition at the time, though it was widely reported that the singer had died, which was false.

"The LAPD no information about the passing of singer Tom Petty. Initial information was inadvertently [sic] provided to some media sources," the police department tweeted.

Following confusion about Petty’s condition, longtime manager Tony Dimitriades on Oct. 2. broke the news of the singer’s death.

"He suffered cardiac arrest at his home in Malibu in the early hours of this morning and was taken to UCLA Medical Center but could not be revived. He died peacefully at 8:40 p.m. PT surrounded by family, his bandmates and friends," he said in a statement.

After no brain activity, a decision was made to pull the plug on his life support, according to reports. The LA County Fire Department confirmed the singer’s death in a statement released to Hollywood Life.

"We received a call at 10:45 PM for an older man in cardiac arrest. When EMTs arrived at the residence they immediately began life-saving procedures and the patient was transported to a local hospital. At the moment we can’t confirm the age of the man or that it is Tom Petty as much of those determinations will be made by the hospital medical staff," the statement read.

The legendary singer rose to stardom in the 1970s with his band, Tom Petty and the Heartbreakers. The group released several hit songs, including, "My Heart Around," "Breakdown," "Listen to Her Heart" "American Girl" and "Stop Draggin."

The band was inducted into the Rock and Roll Hall of Fame in 2002, and Petty saw success as a solo artist with his hit song "Freefallin'."

Petty is survived by his second wife Dana York Epperson and their two children, Adria Petty and Kimberly Violette Petty.