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Man accused of killing NYPD detective faces closing arguments
Guy Rivera is on trial for the 2024 fatal shooting of Detective Jonathan Diller in Queens.
Mar. 31, 2026 at 1:24am
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A single spent shell casing from the shooting that killed NYPD Detective Jonathan Diller serves as a somber reminder of the dangers officers face.NYC TodayClosing arguments are set to begin on Tuesday in the murder trial of Guy Rivera, who is accused of fatally shooting NYPD detective Jonathan Diller in 2024. Rivera was indicted on first-degree murder, attempted murder, and criminal possession of a weapon charges. His attorney is trying to prove the shooting was accidental, while prosecutors argue Rivera intended to kill Diller and another officer.
Why it matters
This high-profile case has drawn significant attention, as the killing of an on-duty police officer is a serious crime that raises concerns about public safety and the challenges law enforcement face. The outcome could have implications for Rivera's potential sentence and set a precedent for how similar cases are handled.
The details
According to prosecutors, Rivera was in the passenger seat of a car when he pulled a gun and shot Diller through the window. Diller's partner then shot Rivera in the back. Rivera is also accused of attempting to shoot Sgt. Sasha Rosen, but his gun jammed. Rivera has pleaded not guilty, and his attorney is arguing the shooting was accidental during a chaotic scene, rather than an intentional act. The defense is asking the judge to allow the jury to consider a criminally negligent homicide charge as a lesser offense, but prosecutors say there is no evidence the shooting was negligent.
- The fatal shooting of Detective Jonathan Diller occurred in 2024 in Queens, New York.
- Closing arguments in the murder trial of Guy Rivera are set to begin on Tuesday, March 31, 2026.
The players
Guy Rivera
A 36-year-old man accused of fatally shooting NYPD Detective Jonathan Diller in 2024. Rivera has been indicted on first-degree murder, attempted murder, and criminal possession of a weapon charges.
Jonathan Diller
A 31-year-old NYPD detective who was killed in the 2024 shooting incident in Queens.
Sasha Rosen
An NYPD sergeant who was the partner of Detective Diller and was also shot at by Rivera, but his gun jammed.
What they’re saying
“We must hold accountable those who commit violence against our brave men and women in law enforcement.”
— Kathy Hochul, New York Governor
What’s next
The jury will begin deliberations after hearing closing arguments from both the prosecution and defense. The judge will then decide whether to allow the jury to consider the lesser charge of criminally negligent homicide in addition to the murder charges.
The takeaway
This case highlights the dangers police officers face in the line of duty and the complex legal issues that can arise when an officer is killed. The outcome will be closely watched, as it could set a precedent for how similar cases of alleged police killings are handled in the future.
