"We are deeply saddened by the loss of a great actor and a wonderful man," his publicist said in a statement. "Dennis Farina was always warm-hearted and professional, with a great sense of humor and passion for his profession. He will be greatly missed by his family, friends, and colleagues. We hope that he finds a new life where great roles are plentiful and the Cubs are always winning the pennant."
A Chicago native, Farina worked in the burglary division of the Chicago Police Department from 1967 to 1985. Beginning in the 1980s, he worked as a police consultant for director Michael Mann, who later cast Farina in Crime Story and Miami Vice.
In 1994, he joined the cast of Law & Order as Det. Joe Fontana, a role he played for two years. In 2008, he became the host of Unsolved Mysteries.
Farina is survived by "the love of his life of 35 years, Marianne Cahill," according to his publicist, as well as three sons from his marriage to Patricia Farina, which ended in divorce in 1980, and six grandchildren.