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Woman pleads guilty to murdering best friend’s 6-week-old son, said she had compulsion to harm kids

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Cite

Li, D. K. (2026, October 30). Woman pleads guilty to murdering best friend’s 6-week-old son, said she had compulsion to harm kids. NBC News. https://www.nbcnews.com/news/us-news/woman-pleads-guilty-murdering-best-friends-6-week-old-son-said-compuls-rcna606390

Dated from the outlet's own feed. Check the original for its byline.

NBC News · collected 2026-10-30 · by David K. Li
Content note This article describes abuse of a child.

Quick Summary

Nicole Virzi, a 32-year-old doctoral student from the University of California San Diego, pleaded guilty in Pittsburgh on Wednesday to third-degree murder and other charges related to the death of her best friend's six-week-old son, Leon Katz. In June 2024, while babysitting for Leon and his twin brother Ari, Virzi inflicted fatal injuries on Leon and non-fatal injuries on Ari. Prosecutors stated that Virzi admitted to a lifelong compulsion to harm children, which she could not control. She was sentenced to 35 to 80 years in prison, with no possibility of parole for at least 35 years.
Written by AI on 2026-10-30, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

Nicole Virzi, a 32-year-old PhD student from the University of California San Diego, pleaded guilty in Pittsburgh court to third-degree murder for the death of her best friend's 6-week-old son, Leon Katz. Virzi, who was facing capital murder charges with potential death penalty consequences, admitted to having a compulsion to harm children and agreed to a plea deal that will keep her imprisoned for life under a sentence of 35 to 80 years. The incident occurred in June 2024 when Virzi babysat Leon while the twins' parents, Ethan Katz and Savannah Roberts, were out with their other son Ari. Leon died from fatal head injuries, while Ari suffered wounds to his genitals. Prosecutors say these severe injuries could not have been caused by a simple fall, leading authorities to immediately suspect foul play and take Virzi into custody shortly after the discovery of Leon's death.

Written for “Nicole Virzi Pleads Guilty” on 2026-10-30, grounded in this article and the 1 other(s) covering the same event.
Why this leaning score
This article does not take a side on a contested political question, so it has no leaning score. That is an answer rather than a gap: a match report or a rescue can be warmly or critically written without being left or right, and scoring it anyway is how approval of a subject gets recorded as a political position.
No political leaning scored for article 116313 · logged 2026-10-30

Story

📰 Nicole Virzi Pleads Guilty
Crime & Law · 2 article(s) covering the same event. See how they differ ↓

Compared with similar articles

This article reads unscored and hedges 32% of its claims. Each row says how that neighbour differs.
New York Post
Hedges 4 of 28 claims Outlet record 66/100
“The articles describe different events as they mention UC San Diego for one incident and Pittsburgh for another, involving Nicole Virzi in separate locations.”
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
28
sentences that state something as happening or true
Uncertain
32%
9 of 28 hedged ("reportedly", "may", "according to")
Leaning
not political
takes no side on a contested political question
Publisher signals
60/100
NBC News's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
2
Crime & Law
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-10-30 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

NBC News · 1896 article(s) · 1 correction(s) detected
Running correction rate · 1 correction(s)

Who wrote this

David K. Li
19 article(s) here · 1 carrying a prediction
🔮 Investigators quickly determined the severity of the injuries to Leon could not have been caused by a fall from such a short height, and took Virzi into custody.
🔮 Longtime “Inside the NBA” host Ernie Johnson announced Wednesday that this season behind the desk will be his last, ending a career that made him one of the most prominent voices of pro basketball.
🔮 “According to Jill Van Mechelen, the suspect would manually choke (strangle) her during these episodes of domestic physical violence,” the affidavit said.
🔮 “OK if these kids would have done this on their own blogs, all good.
🔮 If the Valkyries win Monday’s Game 5 in San Francisco, that means their West Coast fans would have to get to a TV by 9:30 a.m. PT on Thursday and possibly pop champagne bottles before noon should Golden State wrap it up in Atlanta.
🔮 Hall of Fame running back and Southern University football coach Marshall Faulk revealed that he has been diagnosed with Parkinson’s disease and hopes early detection will give him chances “at living a better quality of life.”
🔮 “Blessed with a formidable intellect, dry wit, and beauty, she will be remembered for her devotion to her children Conor, Josephine, and Declan, and her support for educational reform for disadvantaged children and for people living with disabilities.
🔮 “According to relatives, he controlled the family’s finances ... and restricted when family members could leave the residence or spend time with relatives,” Lorah said.
🔮 “I wouldn’t even put this on my worst enemy man,” Ezekiel told NBC affiliate WICU.
🔮 The digital fundraising site said it “identified factual misrepresentations,” but did not immediately reveal what kind of misrepresentations were behind its decision to end the campaign set to benefit Donald and Josephine Johnson.
Also by David K. Li
Nothing else under this byline is closely related to this article, so these are simply their most recent.
All 19 articles by David K. Li →

Topics

Allegheny County Pittsburgh Savannah University of California San Diego the Allegheny County District Attorney’s Office

Subjects

Virzi PERSON · 11× Leon PERSON · 8× Roberts PERSON · 7× Nicole PERSON · 4× Ari PERSON · 3× Pittsburgh GPE · 3× DiLucente PERSON · 2× Nicole Virzi PERSON · 1× University of California San Diego ORG · 1× the Allegheny County District Attorney’s Office ORG · 1×

Narrative

“It’s just a bizarre case from a lot of different viewpoints, that someone would fly in from across the country to see her best friend and then to do such a horrendous premeditated act,” DiLucente told NBC News on Thursday.
framing: mixed · carried by 1 article(s) · first seen 2026-10-30
🔮 Investigators quickly determined the severity of the injuries to Leon could not have been caused by a fall from such a short height, and took Virzi into custody.

Claims (28 extracted, 9 hedged)

A woman driven by a compulsion to harm children admitted in a Pittsburgh court on Wednesday that she murdered her best friend’s infant son, in a plea agreement that’ll likely keep this “monster” in prison for life. asserted
that → drive → life
Nicole Virzi, 32, had been charged with capital murder with the possibility of the death penalty before opting to plead guilty to third-degree murder and other charges. asserted
Virzi → charge → murder
She was sentenced to 35 to 80 years behind bars. asserted
She → sentence → bars
“Although this office was committed to pursuing this case to trial and its ultimate conclusion, after continued and on-going consultation with the family and considering the best interest of the community and its protection we agreed to offer the above plea and sentence,” according to a statement by the Allegheny County District Attorney’s Office. uncertain
we → commit → Office
She had been visiting Pittsburgh and help babysit Roberts’ newborn twins, Leon and Ari Katz in 2024. asserted
She → visit → 2024
In June 2024, the twins’ parents, Roberts and Ethan Katz, took Ari to the hospital after discovering wounds on his body. asserted
parents → take → body
Virzi offered to look after Leon while they were away. asserted
they → offer → Leon
Late that night, Virzi called police and claimed 6-week-old Leon had fallen from a baby bouncer. asserted
Leon → call → bouncer
He was rushed to a nearby children’s hospital where he was pronounced dead. asserted
he → rush → hospital
Investigators quickly determined the severity of the injuries to Leon could not have been caused by a fall from such a short height, and took Virzi into custody. uncertain
severity → determine → custody
Leon’s death was eventually ruled a homicide caused by “blunt force trauma to the head” and “the manner of death was ruled homicide,” according to the criminal complaint filed against Virzi by Pittsburgh police. uncertain
manner → rule → police
It was also determined that the injuries to Ari that caused the family to leave Leon in Virzi’s care were caused by Virzi herself. asserted
family → determine → Virzi
Virzi told investigators that she “always had a compulsion she could not control to harm kids,” prosecutors have said in court. uncertain
prosecutors → tell → court
“This was a horrific case in which Virzi used her trusted relationship with the Roberts/Katz family to place herself in a situation where she could commit her horrendous acts,” prosecutors said. uncertain
prosecutors → use → acts
The mother, Roberts, said this tragedy has forever shaken her trust in humanity. asserted
tragedy → say → humanity
“Nicole’s actions have fundamentally changed me as a person and I feel unrecognizable from the Savannah I used to be. asserted
I → change → Savannah
I could’ve never imagined that a person, let alone my best friend, was capable of the cruelty or violence Nicole displayed,” Roberts wrote in a letter to Allegheny County Common Pleas Judge Jill E. Rangos. uncertain
Roberts → imagine → Rangos
“One of the most enduring impacts of Nicole’s crimes is that my own self-confidence is forever shattered and I’ll never forgive myself for failing to protect my babies from this monster.” asserted
I → shatter → monster
An attorney for Virzi could not be immediately reached for comment. uncertain
attorney → reach → comment
Virzi will have to serve the full length of the minimum sentence of 35 years behind bars before she’s eligible for parole, according to Phil DiLucente, a local criminal law attorney and legal analyst for NBC affiliate WPXI. uncertain
she → have → WPXI
It’s highly unlikely a parole board would ever allow Virzi to walk out of prison, DiLucente said. asserted
DiLucente → ’ → prison
“It’s just a bizarre case from a lot of different viewpoints, that someone would fly in from across the country to see her best friend and then to do such a horrendous premeditated act,” DiLucente told NBC News on Thursday. asserted
DiLucente → ’ → Thursday
“She just doesn’t apply to any of the things that would be (considered a) mitigating (factor in granting parole).” asserted
that → apply → parole
Both of Leon’s parents are twins and it was always the couple’s dream to also have twins, Roberts said. asserted
Roberts → have → twins
The mom worries that she’ll never be able to let their surviving twin son, Ari, out of her sight. asserted
she → worry → sight
“It look nearly a year for me to use the bathroom, shower or brush my teeth by myself after learning Nicole hurled Leon to the ground on our old bathroom floor, fracturing his skull and ending his life,” Roberts wrote. asserted
Roberts → look → life
“Whenever I entered the bathroom, Ethan had to stand outside the door to talk to me the entire time, preferably holding Ari where I could see him so I could be sure he was okay,” she said. uncertain
she → enter → him
“I’ve still never been able to leave Ari alone with a friend and I don’t know if I ever will,” she wrote to the judge. asserted
she → leave → judge
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