California PhD Student Confesses Urge to Kill Kids During 13-Hour Interrogation

A California PhD student has been sentenced to 35 to 80 years in prison after pleading guilty to killing her friend's six-week-old son in Pittsburgh.

Nicole Virzi, 32, pleaded guilty to third-degree murder, aggravated assault and endangering the welfare of children on Wednesday 28 October 2026, ending a capital case. The Nicole Virzi guilty plea follows a 13-hour police interview in June 2024. Virzi was sentenced to 35 to 80 years in state prison.

Nicole Virzi Guilty Plea Spares Family a Trial

Deputy District Attorney Emma Schoedel told the court the plea was made partly to honour the wishes of Leon's parents, Savannah Roberts and Ethan Katz, who did not want to endure a trial. She added that both would have been witnesses.

Prosecutors had filed notice in August 2024 that they intended to seek the death penalty, a decision described as rare. Pennsylvania has carried out no executions since 1999.

Virzi had been due to face a capital trial before Judge Jill E. Rangos on 1 October, but proceedings were postponed while the deal was negotiated. She declined to address the court. Her attorney, Tina Miller, said she would stay silent out of respect for the family and had written them a letter they could choose whether to read.

What She Told Detectives During 13 Hours of Questioning

Leon Katz died in June 2024, aged six weeks. Virzi, of San Diego, had been studying clinical psychology. She has been held at Allegheny County Jail since her arrest on 16 June 2024 and had faced a potential death sentence before the plea agreement.

Virzi called 911 at 11.17pm on 15 June 2024 to report that Leon was having difficulty breathing and had a lump on his head. Police subsequently interviewed her for 13 hours before charging her on 16 June. He died in hospital a few hours later, having suffered multiple skull fractures.

Virzi initially told police that she had gone to get a bottle and found Leon on the floor after hearing him scream. Detectives pressed her, noting that a fall from that height could not have caused his injuries. She changed her account and told the lead detective she had shaken him hard and dropped him, and had also flipped him upside down on the tile bathroom floor.

In the video-recorded interview, she said: 'Something just came over me I couldn't control.' She told detectives she had felt an urge to harm children for years, describing it as a compulsion, and that being treated like a nanny had built up anger in her. She also admitted injuring Leon's twin brother, Ari, who survived, according to WTAE.

Defence Challenge Failed Before Plea Deal

Virzi's lawyers had tried to suppress her statement, arguing she made it after a long day with little sleep or food. Judge Rangos later refused the motion, ruling that the statement had been given voluntarily and with full understanding.

The plea agreement brings an end to a case that began in June 2024 and spares Leon's parents a trial. It also removes the possibility of a death sentence, which Virzi had faced if convicted of first-degree murder. She was sentenced on the same day she entered her guilty plea.