The explosion, which left seven people missing, started a wildfire and forced some cities and counties to cancel or postpone Fourth of July fireworks shows.

Investigators have located human remains following a large explosion at a Northern California fireworks warehouse

A young girl was seriously injured on the Fourth of July during a fireworks mishap in Buena Park, authorities said. In a news release, the Buena Park Police Department said officers responded to reports of a fireworks-related injury at about 9:50 p.m. Friday on the 8000 block of Cornflower Circle.

A large illegal fireworks display, placed in the street by the homeowner, failed and began misfiring toward the home where the child was, police said.