Arthur H. Walner, 84, a statistical scientist who served as director of the D.C. police department’s operations planning division, died Dec. 13 at his home in Boca Raton, Fla.

He had heart ailments,his daughter Debbie Gold said.

Mr. Walner joined the D.C. police force in 1967. In the early years of his tenure, he developed and directed a program that used computers to predict and prevent crimes. He retired in the 1970s, his daughters said.

Arthur H. Walner — the middle initial did not stand for anything — was born in New York City. He received a bachelor’s degree from the City College of New York.

Before joining the police force, he was divisional chairman of the physical sciences and engineering section of the American Statistical Association. He worked for more than a decade as head consultant statistician at the U.S. Naval Applied Science Laboratory in New York.

Mr. Walner received several professional honors. He wrote two books on crime, including “Wake Up America to Crime Prevention and Anti-Terrorism” (2006) and a sequel published in 2011.

He lived in Silver Spring before retiring to Florida more than a decade ago.

Mr. Walner’s marriages to Beverly Block Walner, Shoshana Sharf Walner, Krystyna Ewa Dolinska Williams Walner, Barbara Eve Friedman Walner and Sherry Lynn Brown Crumley Walner ended in divorce.

Survivors include his wife of six years, Anne Stearn Lynch Walner of Boca Raton; three daughters from his first marriage, Tova Abady of Silver Spring, Debbie Gold of Olney and PJ Himelfarb of Austin; a brother; and four grandchildren.

— Emily Langer