William M. Casey, a former New York City deputy police chief who was the unheralded hero of the “Dirty 30” corruption investigation that ensnared one-sixth of the officers assigned to a West Harlem precinct, died on Nov. 9 at his home in Pleasantville, N.Y. The cause was complications of a stroke and Parkinson’s disease, his daughter, Kimberly Wildey, said. The scandal — often described as the largest police corruption case involving a single precinct in the department’s history — was uncovered by a commission on police corruption appointed by Mayor David N. Dinkins in 1992 and headed by Justice Milton Mollen of the New York State Supreme Court. The case was prosecuted by the U.S. attorney’s office for the Southern District of New York under Mary Jo White. The operation resulted in charges against 34 officers, 30 of whom were either convicted or pleaded guilty to crimes ranging from perjury and civil rights violations to stealing drugs or cash from narcotics dealers.

---

Persons: William M, Casey, Kimberly Wildey, —, David N, Dinkins, Milton Mollen, Mary Jo White Organizations: New York, Court, U.S, Southern, of, West 151st Locations: New York City, West Harlem, Pleasantville, N.Y, of New York, Amsterdam Avenue