Hollywood actor Michael Madsen died in his California home on Thursday morning, US media reported. He was 67.
He was found unresponsive by authorities responding to a 911 call at his Malibu home and pronounced dead at 08:25 local time (BST), according to The Hollywood Reporter.
He is believed to have died of cardiac arrest, according to a representative.
Madsen was a prolific actor, best known for his roles in Quentin Tarantino movies Reservoir Dogs, Kill Bill: Vol. 2, The Hateful Eight and Once Upon a Time in Hollywood.