The blast caused several spot fires and scattered large pieces of debris across a wide area, authorities said. The cause is under investigation.

A number of municipalities across Northern California have put their Fourth of July fireworks shows on hold after the explosion at a fireworks warehouse in Esparto. Cal Fire says seven people are unaccounted for after the massive explosion at Devastating Pyrotechnics on Tuesday.

Seven people are missing after a huge explosion at a warehouse in Esparto, Calif., that sent bright fireworks across the area and ignited a brush fire.