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San Pablo Today
By the People, for the People
Five Charged with Murder in Deadly Northern California Fireworks Explosion
Illegal fireworks warehouse blast killed 7, shook farming community
Apr. 10, 2026 at 9:50pm
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The deadly Northern California fireworks warehouse explosion has led to murder charges against five individuals, exposing the dangers of illegal pyrotechnics operations.San Pablo TodayFive people, including a former Yolo County Sheriff lieutenant, have been charged with murder in a deadly Northern California explosion at an illegal fireworks warehouse that killed seven people and injured two others. The charges stem from a grand jury indictment that found the defendants responsible for the July 1 explosion that sparked a massive fire and led to nearby Fourth of July celebrations being called off.
Why it matters
This case highlights the dangers of illegal fireworks operations and the need for stronger oversight and enforcement to prevent such tragic incidents. The involvement of a former law enforcement official also raises concerns about potential abuse of power and corruption.
The details
The indictment alleges that Samuel Machado, who owned the warehouse about 40 miles northwest of Sacramento, allowed more than 1 million pounds of fireworks not legally allowed to be stored at his property. Machado, who was a lieutenant with the Yolo County Sheriff's Office at the time, used his position to help shield the expanding illegal operation. The warehouse grew from 13 fireworks storage containers in 2015 to 50 last year. Others charged include the owner and employees of Devastating Pyrotechnics, which stored and sold fireworks at Machado's warehouse.
- The deadly explosion occurred on July 1.
- The grand jury indictment was issued on April 10, 2026.
The players
Samuel Machado
Former Yolo County Sheriff lieutenant who owned the illegal fireworks warehouse where the deadly explosion occurred.
Kenneth Chee
Owner of Devastating Pyrotechnics, whose illegal fireworks were being stored at Machado's warehouse.
Jack Lee
Operations manager for Devastating Pyrotechnics.
Gary Chan Jr.
Person whose name is on the federal license for Devastating Pyrotechnics.
Douglas Tollefsen
Stored and sold fireworks at Machado's warehouse.
What they’re saying
“This is not a case just about fireworks. They are devices that have so much more explosive fireworks than the law allows that they can't be considered fireworks.”
— Clara Nabity, Yolo County Deputy District Attorney
What’s next
All those charged are scheduled to be arraigned in Yolo County on Monday.
The takeaway
This case highlights the need for stricter regulation and enforcement of fireworks storage and sales, especially when involving law enforcement officials who may abuse their positions of power. The tragedy also underscores the risks posed by illegal fireworks operations and the importance of prioritizing public safety.
