Shipping records show that Devastating Pyrotechnics imported large amounts of raw chemicals often used to manufacture fireworks.

ESPARTO — Three brothers, two of them East Bay residents, were among seven people identified Friday by authorities in Yolo County as victims of an explosion at a warehouse storing fireworks. Investigations continue into the explosion’s fire and origin, and officials have not ruled out the possibility that criminal charges could come later.

Here is what we know about public officials' ties to the Esparto explosion company and property.