Human remains have been uncovered amid the debris of a firework warehouse, days after it caught fire and exploded, setting off a wild pyrotechnics display over California.

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.

Human remains have been found at the warehouse filled with fireworks that exploded in Northern California this week, officials said.