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Beyond that, local officials cited the ongoing criminal investigation led by the Office of the State Fire Marshal. Investigators from the federal Bureau of Alcohol, Tobacco, Firearms and Explosives, as well as Cal-OSHA and others, are also investigating what unfolded in the late afternoon July 1.

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.