LOS ANGELES (AP) -- Mike Connors, who played a hard-hitting private eye on the long-running TV series "Mannix," has died. He was 91.

His son-in-law, Mike Condon, says the actor died Thursday afternoon at a Los Angeles hospital from recently-diagnosed leukemia.

"Mannix" debuted on CBS in 1967 and ran for eight years.

Viewers were intrigued by the smartly dressed, well-spoken Los Angeles detective who could still mix it up with thugs. Episodes normally climaxed with a brawl.

Connors once said that until "Mannix," TV private investigators were hard-nosed and cynical, while Mannix "got emotionally involved" in his cases.

Connors also starred in the short-lived TV shows "Tightrope" and "Today's FBI." His movie roles included "Sudden Fear" with Joan Crawford, "Island in the Sky," "The Ten Commandments," and a remake of "Stagecoach."