Many Bay Area locations use fireworks from other vendors than the company involved in Wednesday’s devastating fire and explosion.

An investigation is underway after a commercial structure exploded and caught fire in Northern California's Yolo County, officials said Tuesday evening.

More than two days after an explosion at a fireworks storage facility in Esparto, seven people remain unaccounted for, according to officials. Family members have been pressing for more information and clarity. "There's a thousand questions and there are no answers," one family member told KCRA 3 on Thursday.