Man Sentenced to 10 Years for Possession of Child Sexual Abuse Material

John Mangan, a former school principal with prior convictions, was sentenced in Trenton federal court after investigators found over 250 illegal images in his home.

A 79-year-old man from Lanoka Harbor, Ocean County, has been sentenced to 120 months in federal prison for possessing child sexual abuse material, Acting U.S. Attorney and Special Attorney Alina Habba announced. The sentencing took place in Trenton federal court before U.S. District Judge Michael A. Shipp, who also ordered the defendant to serve five years of supervised release and pay restitution to his victims.

John Mangan previously pleaded guilty to one count of possession of child pornography. According to court records, federal agents with Homeland Security Investigations executed a search warrant at his residence on October 29, 2024. During the search, they discovered an electronic device containing more than 250 illicit images of child sexual abuse.

Mangan has a history of offenses involving minors. He was previously convicted in New Jersey state court for sexually assaulting a minor during his tenure as a school principal. He also has a prior federal conviction for possession of child pornography.

The investigation was conducted by Homeland Security Investigations (HSI) Newark, under the direction of Special Agent in Charge Michael S. McCarthy. The case was prosecuted by Assistant U.S. Attorney Matt Belgiovine of the Criminal Division in Trenton.

This case was prosecuted under Project Safe Childhood, a national initiative led by the Department of Justice to combat child sexual exploitation and abuse by coordinating federal, state, and local enforcement efforts to apprehend offenders and assist victims. More information can be found at justice.gov/psc.