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.

Michael Madsen, a prolific character actor best known for his frequent appearances in Quentin Tarantino films, died Thursday morning. The cause of death, his manager said (per NBC News), was cardiac arrest. He was 67.

Madsen's managers Susan Ferris and Ron Smith and publicist Liz Rodriguez also confirmed news of the prolific actor's death in a statement shared to The Times on Thursday. Smith said Madsen, who garnered nearly 330 acting credits over the course of his decades-long career, died of cardiac arrest.