The investigation remains ongoing. Investigators released the names on Saturday of the seven people who were killed in a massive pyrotechnics facility explosion in Northern California that took place days before the Fourth of July.

Seven people were "unaccounted for" in Yolo County's town of Esparto after several explosions at a fireworks warehouse resulted in a fire, officials said.

Officials searched a San Francisco home registered as the address for Devastating Pyrotechnics' CEO. Seven died in an explosion at the company's warehouse in Yolo County last week.