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.

Less than a week after acclaimed actor Michael Madsen was found dead in his Malibu home, an official cause of death has been revealed. Madsen passed away at 67 from heart failure, his cardiologist told NBC Los Angeles.

Doctors have determined the cause of death for actor Michael Madsen, who was found unresponsive last week. Madsen’s cardiologist told KNBC that his patient died from heart failure. The actor’s manager told Entertainment Weekly that the doctor’s declaration was accurate and that heart disease and alcoholism were listed as contributing factors.