A Yolo County judge has kept Douglas Tollefsen locked up without bail in connection to the July 1, 2025 Esparto fireworks explosion that killed seven workers—and he’s signaling he may soon crack open sealed grand jury records in a case prosecutors describe as a“decade-long conspiracy.”
Judge Daniel Maguire’s decision Thursday to deny bail for Tollefsen, described by prosecutors as a longtime operator and“higher-level lieutenant”for Devastating Pyrotechnics, draws a sharp contrast to recent releases of some co-defendants. Former Yolo County Sheriff’s Lieutenant Samuel Machado and his wife Tammy, who owned the property where the illegal fireworks operation was based, have both been released on bail. Craig Cutright, a former Esparto Fire Protection District member who ran a second fireworks company at the site, has also secured bail. Tollefsen’s case stands apart—and the judge made clear why.
The hearing centered on a fundamental dispute: What caused the blast, and who bears responsibility? Deputy District Attorney Clara Nabity argued the deaths weren’t the result of a single accident, but rather a combination of deliberate acts. The warehouse was packed with illegal explosives, many bearing Tollefsen’s personal label.“There is absolutely no way e-matching on its own could have caused the deaths of seven people,”Nabity said, referencing the practice of attaching electric igniters to fireworks. Tollefsen’s attorney Ron Johnson fired back, arguing his client wasn’t in charge of warehouse operations and that supervisors and workers themselves made the calls. He pointed to testimony suggesting other men, not Tollefsen, were giving directions, and blamed unsafe conditions partly on workers’substance use and lack of safety equipment.
Judge Maguire wasn’t buying it. He found sufficient evidence that Tollefsen was heavily involved in operations and contributed to the dangerous conditions—and critically, that he attempted to restart the explosives business after the blast.“An alarming circumstance,”Maguire called it, signaling that Tollefsen’s apparent willingness to continue the work despite the deaths made him too risky to release.
On a separate but significant front, the judge also signaled he’s skeptical about keeping grand jury records sealed. Tollefsen’s attorney had asked to make one filing public, arguing it contained nothing new. Prosecutors objected, citing sealed testimony and toxicology reports. But Maguire put them on notice: at the next hearing, he’ll consider unsealing the grand jury transcript.“I have not seen anything that justified continued secrecy,”the judge said, though he’ll hear from prosecutors and other defendants first.
All eight defendants indicted in April are due back in court July 1. Prosecutors have alleged the operation imported more than 11 million pounds of explosives and sold them as consumer fireworks—a sprawling scheme that now faces the full weight of a judicial reckoning that could finally expose what really happened on that July day near Esparto.
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Andrew Johnson
Andrew Johnson is a contributor to LocalBeat, covering local news and community stories.
