SIMI VALLEY, Calif. (AP) - 7-5-13 Update:
A fire official in Simi Valley, California says there's no indication what caused a Fourth of July fireworks explosion that injured dozens of spectators at a community aerial display.
Ventura County Fire Department Deputy Chief Mike LaPlant says more information is needed from the pyrotechnics company and eyewitnesses.
Police earlier said a fireworks shell apparently detonated prematurely and knocked over other launching mortars. LaPlant says, however, that multiple things could have happened.
Reports from hospitals show the number of injured, originally put at 28, has surpassed 30 but the exact total is unclear. All but a few were minor injuries.
Original story 7-4-13:
At least 14 people have been injured due to malfunctioning fireworks at an annual 4th of July show northwest of Los Angeles.
Police Cmdr. John Parks said a detonation occurred about 9:20 p.m. Thursday at the city-run Fireworks Extravaganza located in a large community park in Simi Valley. It wasn't clear how many people were in attendance but Parks said the event usually attracts several thousand revelers.
Jordan Roberts, a public safety dispatcher with the Ventura County Fire Department, said more than a dozen people were being taken to area hospitals with minor to moderate injuries.
No other details were immediately made available.
Simi Valley is about 40 miles northwest of Los Angeles.