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, who was found unresponsive in his Malibu home on July 3, died from heart failure, with heart disease and alcoholism as contributing factors, his rep said.

Authorities in Los Angeles have confirmed the cause of actor Michael Madsen’s death: heart failure. Madsen’s doctor told a local NBC affiliate that apart from his official cause of death, heart disease and alcoholism will be named as contributing factors on his death certificate.