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.

In one of the seminal movies of the 1990s, Tarantino's Reservoir Dogs, Madsen played psychotic thief Mr Blonde, who shocked audiences in a scene where he cut off a policeman's ear.

During a career spanning four decades, Madsen also took on a number of tv roles.

In both tv and film, he often portrayed the law enforcers like sheriffs and detectives, as well as the law breakers, such as a washed-out hitman in the Kill Bill franchise.

In recent years, he lent his voices to video games, including Grand Theft Auto III and the Dishonored series.