The July 1 explosion near Esparto leveled at least one building and ignited a 78-acre fire in an agricultural area about 40 miles northwest of Sacramento, killing seven people.

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. The blast occurred in Esparto, about 40 miles from Sacramento, on July 1, triggering a series of massive explosions, according to the fire department.