Michael Madsen's manager previously said, 'What we understand is Michael had a cardiac arrest and was found unresponsive in his Malibu home' on July 3. The 'Kill Bill' actor was 67.

Authorities in Los Angeles have confirmed the cause of actor Michael Madsen’s death on July 3 at the age of 67: heart failure. Madsen’s doctor told a local NBC affiliate that heart disease and alcoholism would also be named as contributing factors on his death certificate.

Michael Madsen’s doctor is confirming the actor’s cause of death, less than a week after the “Reservoir Dogs” star died. He was 67.