ICE-led investigation leads to repeat offender’s guilty plea for possessing child sexual abuse material

TRENTON, N.J. — A New Jersey man admitted to possessing images of child sexual abuse material following an investigation led by U.S. Immigration and Customs Enforcement Homeland Security Investigations.

John Mangan, 78, of Lanoka Harbor, pleaded guilty June 10 to an information charging him with one count of possession of child pornography at the U.S. District Court for the District of New Jersey in Trenton.

“Mangan is a prior convicted sex offender with depraved desires that fuel the hideous market of online child sexual exploitation and abuse ICE Homeland Security Investigations vows to dismantle,” said ICE HSI Newark Special Agent in Charge Ricky Patel. “The success in this investigation is the tips we received led to the justice that will now be served on behalf of all the innocent minors who are targeted by these disturbed predators. Anytime a person suspects that someone is exploiting or abusing a child, they should notify law enforcement authorities as soon as possible.”

According to the investigation, on Oct. 29, 2024, ICE HSI special agents executed a search warrant at Mangan’s residence in Lanoka Harbor and discovered an electronic device containing over 250 images of children being sexually abused. Mangan was previously convicted of sexual offenses involving minors, including a New Jersey conviction for sexual assault against a minor for conduct that occurred while Mangan was a school principal, and a prior federal conviction for possession of child pornography.

The Ocean County Prosecutor’s Office and Lacey Township Police Department assisted HSI Newark in the investigation.

Because Mangan has been previously convicted of certain qualifying offenses, the count of possession of child pornography carries an enhanced mandatory minimum penalty of 10 years in prison, a maximum penalty of 20 years in prison, and a fine of $250,000. Sentencing is scheduled for Oct. 21.

HSI is at the forefront of the U.S. government’s efforts to combat online child sexual exploitation and abuse through its investigations, victim assistance programs, intelligence and analysis, policy development, and training and awareness programs.

For any child, parent, guardian of New Jersey, searching for resources and information on how to prevent and combat online child sexual exploitation, go to Know2Protect.gov. If you suspect a child might be a victim, please call the ICE Tip Line at 866-DHS-2-ICE (866-347-2423).

Know2Protect is a national public awareness campaign from the Department of Homeland Security. K2P’s aim is to educate and empower children, teens, parents, trusted adults, and policymakers to prevent, combat, and report online child sexual exploitation and abuse. For more information, please visit our YouTube playlists at Know2Protect Campaign PSA Playlist and Know2Protect Digital Safety Series Playlist on the DHS main channel. Additional resources are available at Know2Protect.gov, Instagram, Facebook and X.