Police and firefighters responded to reports of a large explosion followed by a series of smaller explosions on July 3.

In one of California’s earliest recorded fireworks warehouse explosions, a blast at a United Fireworks plant in Rialto killed three workers and injured nine on Feb. 15, 1968. The San Bernardino County Sun newspaper reported that 35 buildings were damaged or destroyed.

California fireworks facility explosion injures two, leaves seven missing and over 150 customers without power as firefighters deem the site too dangerous to enter for search operations.