Press Release


For Immediate Release:
April 14, 2023

Bergen County Prosecutor Mark Musella announced that NILES DIAKOS of Leonia, NJ pled guilty to the March 26, 2022 murder of Alicia Arnone in Leonia, NJ.

After receiving a 911 call on March 26, 2022, Leonia police arrived at Alicia Arnone’s apartment, where Ms. Arnone was found deceased with multiple stab wounds. During an investigation conducted by the Bergen County Prosecutor’s Office Major Crimes Unit and Leonia Police Department, it was determined that Ms. Arnone’s boyfriend, NILES DIAKOS, was responsible for her murder.

DIAKOS pled guilty to first-degree murder, N.J.S.A. 2C:11-3a(1). The State will recommend a sentence of 30 years in New Jersey State Prison. Sentencing is scheduled for May 22, 2023.

The State was represented by Assistant Prosecutors Stephen Bollenbach and Christine Caputo-Howland. They were assisted by Sergeant Anthony Primiano of the Bergen County Prosecutor’s Office Major Crimes Unit.

Prosecutor Musella thanks Assistant Prosecutors Bollenbach and Caputo- Howland for their zealous advocacy for the victim and her family. Prosecutor Musella also commends the detectives of the Major Crimes Unit as well as members of the Leonia Police Department and the Bergen County Sheriff’s Office for their skill and professionalism in investigating this matter and bringing it to a successful conclusion.