“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.

Vivica A. Fox is mourning the loss of her former co-star Michael Madsen. The actor reportedly died from cardiac arrest at age 67, per his manager, Ron Smith. Fox, 60, and Madsen starred in the “Kill Bill” movies together in 2003 and 2004.