Hollywood is mourning the loss of Michael Madsen after the actor and Quentin Tarantino collaborator died of cardiac arrest.

Michael Madsen's sister, Virginia Madsen, shared a moving post about the actor who died on Thursday from cardiac arrest. He was 67. The actress shared a black and white photo of the siblings on Instagram along with a message on behalf of her and their family.

Michael Madsen, best known for his roles in Quentin Tarantino films “Reservoir Dogs," “Kill Bill: Vol. 2," “The Hateful Eight" and “Once Upon a Time in Hollywood," has died.