John O’Malley, Bronx Detective and Federal Investigator, Dies at 73

As a detective with the N.Y.P.D., he helped prosecute violent crimes under federal law. At the U.S. attorney’s office, he was involved in high-profile exonerations.John O’Malley in 2014. “No one was more responsible for cleaning up the streets of New York, or at least the Bronx — more than you can possibly imagine — than John O’Malley,” a fellow detective said.