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.

The Reservoir Dogs actor was found dead at his home in Malibu, California last week, and his cardiologist has now confirmed the cause of death. The doctor told NBC4 Los Angeles that heart failure will be listed as the cause,

Madsen's doctor said heart failure will be listed as the cause of death, with heart disease and alcoholism named as contributing factors.