(CNN)TV actor Joe Santos, best known for his role as police Sgt. Dennis Becker on the 1970s show "The Rockford Files," has died, according to his agent, Alicia Beekman. He was 84. Beekman could not provide any details about his death. Santos was a durable character actor who often played "good cop" roles, as in "The Blue Knight," according to the Internet Movie Database. He had a recurring role as Angelo Garepe in "The Sopranos" until his character was killed and tossed into the trunk of a car.