Richard Shotwell/Invision/AP

James Gandolfini, who most famously played "Sopranos" family patriarch Tony Soprano, died earlier today at the age of 51.

TMZ reports that the actor is believed to have suffered a heart attack while in Italy to attend the 59th Taormina Film Festival in Sicily.

In addition to his career-defining role in HBO's "The Sopranos," Gandolfini had notable roles in a number of movies, including "Zero Dark Thirty," "Fallen," "Get Shorty," "Welcome to the Rileys," and "True Romance."

Gandolfini also won a Golden Globe and three Emmys for his work in "The Sopranos."

[via TMZ]