UPDATE as of 1:44 p.m.:

The number of people injured during a fireworks incident in Simi Valley has risen.  Authorities now say at least 36 people were injured or treated at area hospitals after a malfunction during the fireworks show sent some fireworks into a crowd of spectators yesterday.

The injuries were mostly burn injuries and injuries consistent with those of shrapnel and trampling, said Kim Milstein, CEO of Simi Valley Hospital. The patients ages range from 17-months to 71-years-old. None of the injuries are considered life threatening.

Deputy Chief Mike Laplant with the Ventura County Fire Department says you shouldn't let this incident from deter you from attending fireworks shows. Professional fireworks shows are absolutely the safest place to watch pyrotechnics, Laplant said. Far more people are injured while using private fireworks each year.

The investigation continues into the cause of the accident.


Investigators are trying to figure out what happened during a Fourth of July fireworks show in Simi Valley after more than two dozen people were hurt.

Authorities believe that at least one pyrotechnic device detonated prematurely, causing a chain reaction.

Mike Lindbery with Ventura County Fire Department says there was a safety perimeter around the launch area but something went wrong.

Twenty people were taken to the hospital. Eight people were treated on scene and released.

Between 8,000 and 10,000 people were gathered at Rancho Santa Susana Regional Park to watch the professional display.