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.

Yolo County authorities will give an update Monday about the deadly fireworks explosion in the Esparto area, as families await answers nearly a week after the tragedy.

The state fire marshal sat down for a one-on-one interview regarding the investigation into the Esparto fireworks warehouse explosion that killed seven people.

The U.S. Chemical Safety and Hazard Investigation Board would investigate such an explosion. The White House has proposed eliminating it.

The fire call for a property just off County Road 23 in Esparto, California, went out after 5 p.m. on July 1. By the evening's end, seven people would be dead, following a series of explosions involving commercial fireworks and ammunition.

As the investigation continues into the deadly explosion in Esparto, a web of possible conflict-of-interest issues have come to light involving Yolo County, raising new questions about whether the county should be as involved as it has been and if the state should do more to protect the integrity of the investigation.