'The Los Angeles Times' reports that Quinn died near his home in Malibu, California on Friday evening of a suspected heart attack.
Lt. James Royal of the Los Angeles County Sheriff's Department's Malibu/Lost Hills station told the 'Times' that Quinn collapsed on the street where he lived while walking home from a nearby store with one of his sons. He was pronounced dead at Santa Monica-UCLA Medical Center.
Quinn made his big-screen acting debut in 1986 with the role of drug-dealing soldier Rhah in Oliver Stone's 'Platoon,' and went on to appear in more than a dozen movies.
He also carved out an impressive TV resume, starring in 'The Young and the Restless' and landing recurring roles in primetime dramas like '24' and 'JAG.'
Born in Rome, Italy in 1963, Quinn was the son of the Mexican-Irish Oscar-winning actor Anthony Quinn ('Zorba the Greek') and his Italian wife Jolanda Addolori.
His ancestry allowed Quinn to play a variety of characters, ranging from Mexican to Middle Eastern to Italian. He even got to share a role with his father in the 1990 TV dramatization of Ernest Hemingway's 'Old Man of the Sea,' in which both Quinns played the main character Santiago at different stages of his life.
Quinn had numerous guest star spots on TV shows like 'Miami Vice' and 'Pensacola: Wings of Gold' in the '80s and '90s, but his big TV break came with the role of Tomas del Cerro on daytime soap 'The Young and the Restless' in 2000.
He played Tomas for two years before landing the recurring role of Kabir Atef on 'JAG,' which he followed up by playing terrorist Syed Ali on Season 2 of '24.' Quinn later went on to have a recurring role on 'The Shield' playing Beltran.
His birthplace of Rome provided Quinn's most recent US TV role, the part of Gilberto Nieddu in PBS's police drama, 'Zen.' Gilberto is the best friend and confidant of the main character, Rome police detective Aurelio Zen (played by Rufus Sewell).
Quinn also maintained a successful TV acting career in Italy. Earlier this year he played Fabrizio Raimondi, a recurring role on Rai Uno's police drama 'Il commisario Manara.'
Francesco Quinn is survived by his wife, Valentina Castellani-Quinn, and three children.