(WSVN) - An explosion caused by fireworks sparked a fire at several homes in California.

More than 130 firefighters responded to contain the flames. They say at least three one-story homes were ignited by active fireworks inside a garage in a neighborhood in Simi Valley just before 10:00 p.m. on Thursday.

Fireworks continued to go off as the fire burned, making the fire crews’ attack more difficult.

Several animals were injured. One woman remains in critical condition.

This follows a huge explosion at a fireworks warehouse in Northern California’s Yolo County that sent first responders running to the scene Tuesday.

The explosion caused spot fires, prompting several residential evacuations.

The causes of both fires are under investigation.

Seven people are still unaccounted for.

Please check back on WSVN.com and 7News for more details on this developing story.

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