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

Seven people were missing after a fire and powerful explosion leveled a commercial fireworks facility in rural northern California, authorities said on Wednesday.

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.