New Jersey Supreme Court

State v. DiNapoli: The New Jersey Supreme Court Clarifies Causation Defenses in Vehicular Homicide Cases

Published on: May 21, 2026 | by Stephen J. Natoli

The New Jersey Supreme Court issued a unanimous decision in State v. Thomas J. DiNapoli that carries significant implications for how vehicular homicide cases are litigated across the state. At its core, the Court held that a defendant charged with vehicular homicide has the right to present expert testimony challenging the State’s theory of causation under prong one of N.J.S.A. 2C:2-3(c), even when that testimony does not directly rebut “but for” causation. The Court also held that no preliminary N.J.R.E. 104 hearing is required to determine the admissibility of such expert opinions. For criminal defense attorneys and prosecutors working in Hudson, Essex, Union, Passaic, and counties throughout New Jersey, the decision reshapes how causation defenses are built, disclosed, and presented at trial.

On the afternoon of June 4, 2019, Thomas DiNapoli was driving in Union Township when his vehicle crossed the double yellow lines and struck an oncoming car. The front-seat passenger was ninety-four years old and suffering from dementia and Alzheimer’s disease. She was transported to the hospital with rib and patella fractures and lung contusions. The following day, her family opted for palliative care given her overall condition, and she died later that afternoon. DiNapoli, who had taken his prescribed medication Clonazepam in excess of a normal therapeutic dosage before driving, was charged with second-degree vehicular homicide. The autopsy listed the cause of death as blunt impact injuries sustained in the collision.

To contest the State’s theory that his reckless driving caused the front-seat passenger’s death, DiNapoli proffered three experts who concluded that the injuries were not life-threatening and that she would have recovered from the accident had her family not elected palliative care. In their view, the actual cause of death was respiratory depression brought on by the narcotic medications administered as part of hospice treatment, not the trauma from the crash. The State moved to bar all three experts, and after a procedural history that included a mistrial, the Appellate Division sided with the State and remanded the matter for an N.J.R.E. 104 hearing to resolve what it saw as troubling inconsistencies among the defense experts’ reports. The Supreme Court granted leave to appeal and reversed.

New Jersey Supreme Court Rules That Cell Site Location Evidence Requires an Expert Witness

Published on: April 24, 2026 | by Stephen J. Natoli

Cell-Phone-Tower-Expert-300x300 On April 16, 2026, the New Jersey Supreme Court issued a unanimous decision in State v. Jule Hannah that carries significant consequences for how cell phone location evidence can be presented in criminal trials. The Court held that cell site location information, commonly known as CSLI, involves technical and specialized knowledge that is beyond the understanding of the average juror, and therefore must be introduced through a qualified expert witness. The decision affirms the Appellate Division’s reversal of Hannah’s first-degree murder conviction and orders a new trial, drawing a clear line that prosecutors and defense attorneys across New Jersey must now respect.

The case arose from the January 2017 death of Miguel Lopez, who was found shot to death in his car in Bridgeton after crashing into a tree. Investigators developed Hannah as a suspect based on surveillance footage, DNA from a cigar butt recovered from the passenger seat, and cell phone records. At trial, the State sought to use those records to place Hannah in Lopez’s car during the ride from Monroe Township to Bridgeton. Rather than calling a qualified expert, the State presented Detective Sergeant Leyman as a lay witness to testify about which cell towers Hannah’s phone connected to during the relevant time period. The trial court tried to thread the needle allowing Leyman to testify about tower locations while repeatedly instructing the jury that a cell phone’s connection to a tower does not establish where the phone was at any given moment. That tension, the Supreme Court concluded, was precisely the problem.

The Court’s analysis began with a foundational distinction in the rules of evidence between lay and expert testimony. Under New Jersey law, a lay witness can offer opinions based on common knowledge and observation. When a subject is so technical that the average juror cannot form a valid conclusion without guidance, however, expert testimony is required. CSLI, the Court explained, squarely falls into that category. Whether a phone connects to the nearest tower depends not just on proximity but on a constellation of variables such as tower height, antenna direction, terrain and topography, network load balancing, and the technical characteristics of the phone itself. A jury left to draw inferences from raw call records, without any expert framework to interpret them, risks attributing far more or far less weight to that data than the evidence actually warrants.

When Small Errors Add Up: Drug Conviction Overturned in State v. Butler

Published on: April 13, 2026 | by Stephen J. Natoli

Judicial-papers-and-evidence-folder-300x300 Prosecutors are given considerable room to be forceful at trial. They can strike hard blows, paint vivid pictures for the jury, and provide context for how an investigation unfolded. But there is a line between vigorous advocacy and conduct that undermines a defendant’s right to have guilt or innocence decided solely on the evidence. In a unanimous opinion issued on February 25, 2026, the New Jersey Supreme Court drew that line in State v. Gerald W. Butler, reversing a drug conviction and ordering a new trial after finding that no single trial error required reversal, but the accumulation of errors together did.

The case grew out of “Operation That’s All Folks,” a multi-agency investigation launched b y the Cumberland County Prosecutor’s Office Organized Crime Bureau in response to a series of shootings in Millville. Butler was not connected to those shootings. He became a subject of the investigation only after wiretap surveillance captured a call in which participants discussed a firearm purchase and police identified his voice. From there, investigators obtained a wiretap on Butler’s phone, surveilled an apartment he was seen entering, and ultimately executed a search warrant that turned up heroin, cocaine, drug paraphernalia, and two revolvers. Butler was acquitted of all weapons charges but convicted of CDS offenses, including distribution and conspiracy.

The problems at trial were multiple. First, the prosecutor opened by comparing the case to The Wire, the HBO drama famous for its portrayal of organized crime, murder, and urban violence in Baltimore. Defense counsel objected immediately. The trial court overruled the objection, reasoning the comments were not overly prejudicial. The Supreme Court disagreed that the analogy was appropriate, noting it invited jurors to associate Butler with violent criminal conduct untethered to anything the evidence would actually show. Still, because the reference was isolated and not repeated in closing, the Court declined to call it reversible error standing alone. Second, throughout trial, law enforcement witnesses testified extensively about gun violence, weapons trafficking, and organized criminal activity in Millville, all of it unconnected to Butler personally. The Court found this testimony improper, noting that while police can explain how an investigation started, background context cannot be used as a backdoor way of suggesting a defendant’s propensity for crime. Again, though, the Court stopped short of reversal on this ground alone, pointing to the substantial evidence on the drug charges and the jury instructions limiting consideration to the charged offenses. Third, despite a pretrial agreement between the parties and a court directive to use only the phrase “lawful search,” the State repeatedly elicited testimony that Butler was the “target” of a search warrant, triggering exactly the kind of improper inference the Court had cautioned against in State v. Cain, that a judge’s authorization of a warrant amounts to pre-approval of guilt. Once more, because the jury acquitted Butler on the weapons counts, the Court found this error alone would likely satisfy the harmless error standard.

State v. Payne and the Limits of Compassionate Release

Published on: January 27, 2026 | by Stephen J. Natoli

Release-300x300 New Jersey’s Compassionate Release Act is supposed to do one thing well. It exists to ensure incarceration does not become a death sentence for someone who is seriously ill, medically vulnerable, or otherwise unable to be safely housed. The New Jersey Supreme Court’s decision in State v. Celestine Payne is a reminder, though, that medical eligibility is not the end of the analysis. Even when a person meets the statute’s medical requirements and shows low public safety risk, release remains discretionary. The State can still defeat the motion if it proves extraordinary aggravating circumstances.

Payne is not a close call on facts. The opinion recounts a disturbing pattern of calculated violence tied to a broader scheme involving life-insurance fraud, manipulation of family and friends, and multiple acts of violence, including an attempted murder and two murders. The Court highlighted the planning, the use of people around her, and the brutality of what happened, including the allegation that, after one victim survived, Payne went to the hospital, posed as his mother, and signed a do-not-resuscitate order. The point was not to relitigate guilt. The point was to explain why the State argued this case fell into the narrow category of truly exceptional and rare conduct.

What made the decision legally important is the procedural posture. The trial court found Payne met the Act’s medical and public safety requirements, but still denied release based on what the Supreme Court previously recognized as an extraordinary aggravating factor. The trial court concluded the offense involved conduct that was particularly heinous, cruel, or depraved. The Appellate Division reversed, reasoning that the facts did not meaningfully exceed what courts often see in murder prosecutions. The Supreme Court disagreed and reinstated the denial.

Supreme Court Rules on Trial Court’s Probe into Juror Impropriety

Published on: January 16, 2026 | by Stephen J. Natoli

Juror-Misconduct-1-300x300 The New Jersey Supreme Court’s decision in State v. Ebenezer Byrd is about something most people don’t think about until it happens: what a judge has to do when there is a credible report that a juror may be breaking the rules in the middle of a criminal trial. At its core, the case reinforces a basic promise of the justice system – jurors must decide guilt or innocence based only on the evidence presented in court, not outside information, outside conversations, or conclusions reached before deliberations begin.

In Byrd, court staff received a call reporting “alarming” conduct by a sitting juror. The report claimed the juror had discussed the case with coworkers, shown articles to others, “Googled” the case, and had already decided she would convict, using the phrase that she was going to “burn their asses.” Even though some details were unclear and the information passed through a few people before reaching the judge, the trial court treated it as serious enough to question the juror.

The Supreme Court’s concern was that the questioning did not match the seriousness of what was alleged. The judge asked the juror general questions, including whether she had encountered “posting or newspaper articles” outside of what was presented in court, but the Supreme Court found that approach too narrow and too generic for allegations like internet research and a mind already made up. In other words, once the court decides an allegation is plausible enough to investigate, it has to ask direct, fact-specific questions aimed at the allegation itself.

Can Trial Courts Deny Defendant’s Request for a New Criminal Defense Attorney on the Day of Trial?

Published on: April 6, 2021 | by Stephen J. Natoli

Yes, if the court conducts a thorough analysis of the factors listed in United States v. Burton and those factors favor denial of Defendant’s request.

In March of this year the New Jersey Supreme Court dealt with this very issue in the context of a murder trial. In State v. Luis Maisonet, the Defendant’s request for a new attorney was summarily denied by the trial court. The record presented a dearth of facts regarding the Burton factors. Nonetheless, the New Jersey Supreme Court found that it could glean sufficient information from the record to analyze the Burton factors in a fashion that militated against the Defendant.

Before conducting its analysis the Court explained that the major considerations any trial court should contemplate are those of the Defendant’s constitutional right to obtain counsel of his choice, the court’s right to control its own calendar and the public’s interest in the orderly administration of justice.