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.

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.

Heart failure ruled as the cause of Michael Madsen’s death, with heart disease and alcoholism named as silent contributors.