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 on July 3 at the age of 67: heart failure. Madsen’s doctor told a local NBC affiliate that heart disease and alcoholism would also be named as contributing factors on his death certificate.

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.