“Kill Bill” and “Reservoir Dogs” star Michael Madsen’s death has been revealed. The actor’s cardiologist told NBC4 Los Angeles Tuesday that Madsen died of heart failure after being found unresponsive in his Malibu, California, home on July 3. He was 67.

Michael Madsen, a frequent Quentin Tarantino collaborator on films like "Reservoir Dogs" and a veteran actor in "Free Willy" and more, has died at 67.