SIMI VALLEY, Calif. - Authorities say 28 people have been injured due to malfunctioning fireworks at an annual 4th of July show northwest of Los Angeles.
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Twenty people were taken to hospitals late Thursday with minor to moderate injuries after the blast at a Simi Valley park.
Police say the detonation occurred about 9:20 p.m. A video clip shown on KCAL-TV shows a pair of firework blasts at or near the ground. It wasn't known how close people were to the blast's origin.
Simi Valley is about 40 miles northwest of Los Angeles.