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Human Remains Located at Esparto Fireworks Warehouse as State Probes Deadly Fourth of July-Week Blasts

Coroner’s office has begun contacting families of missing workers after hazardous debris delayed recovery operations.

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Traffic on Interstate 80 in San Pablo, California, US, on Thursday, July 3, 2025. About 61.6 million Americans will drive this Independence Day holiday, up 2.2% over last year, according to AAA. Photographer: David Paul Morris/Bloomberg via Getty Images

Overview

  • Coroners accessed the Devastating Pyrotechnics warehouse on July 4 and located human remains amid unstable pyrotechnic debris.
  • The coroner’s office has notified families of the seven workers unaccounted for after the July 1 blast and is conducting DNA tests to identify victims.
  • Evacuation orders around the Esparto site have been partially lifted as crews monitor hotspots and secure remaining explosive materials.
  • CAL Fire and the State Fire Marshal’s bomb squad are probing the cause of the blast and examining zoning and permit violations at the unlicensed storage facility.
  • Earlier Fourth of July–week explosions in Simi Valley, Hayward and Pacoima collectively killed three people and left multiple residents critically injured.