Seven were killed in a blast on a deputy’s property. The AG says Cal Fire and Yolo County’s D.A. can handle it.

Yolo County has declared a local health emergency following a deadly fireworks explosion in Esparto to investigate potential contamination from hazardous materials.

Yolo County officials have now released their determination for what killed the seven people in July's Esparto fireworks facility explosion.

Christopher Bocog, 45, of San Francisco, who was known in the rap world as "Oopz" and was a longtime fireworks professional celebrated for his artistry and dedication to family. Neil Li, 41, of San Francisco,

The Yolo County Coroner’s Office released the cause of death on Tuesday for the seven victims who died in the tragic warehouse explosion in Esparto on July 1. • Video above: Roads open to community after Esparto warehouse explosion According to YCCO,

It comes as the county declares a local health emergency allowing officials to identify the materials stored at the blast site and gather environmental samples.