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.

Madsen died from cardiac arrest, his manager Ron Smith told NBC News. Cardiac arrest occurs when the heart stops functioning. It can lead to death without immediate treatment, according to Mayo Clinic.

Chicago native and actor Michael Madsen’s cause of death has been revealed, according to multiple reports from entertainment outlets. The 67-year-old “Kill Bill” actor, who was found dead at his Malibu home on Thursday,