Hugh Hefner died from heart failure after contracting an aggressive strain of e-coli which was resistant to drugs, it has been revealed.
The 91-year-old’s death certificate was obtained by The Blast on Tuesday, less than a week after his death.
It lists Playboy mogul Hefner’s causes of death as cardiac arrest, respiratory failure, septicemia and e-coli.
The Los Angeles County Department of Public Health could not determine how Hefner contracted the deadly bacteria.
Hefner (above in 2014) is survived by his third wife, 31-year-old Crystal Harris (pictured) and his four children from two previous marriages
He died on September 27 at the Playboy Mansion in Beverly Hills surrounded by family.