my heart goes out to everyone who was injured by tonight's firework explosion!! #simivalley—
Alli Vorgitch (@allivorgitch) July 05, 2013
Bummer, in Simi Valley watching the fireworks. 2 min in, ground explosion, people got hurt and show was over.—
Spencer Rose (@spensyr) July 05, 2013
Scary news tonight out of southern California as Independence Day wrapped up: A fireworks mishap in Simi Valley led to all the explosives going off at once. There are several reported injuries. Twitter users on scene broke the news on social media tonight.
Almost just died…leave it to Simi Valley to have a firework explosion—
Justice Allen (@Floeticjae) July 05, 2013
Simi Valley misfire! Huge explosion 30 yards away. I hit the dirt. People injured I think :-(—
Alex Kunzelmann (@alexkunzelmann) July 05, 2013
Twitchy will continue to monitor and update as news developments. Prayers out to all involved.
Update: KTLA reports 10 injured, per fire officials.
The NBC news affilate in Los Angeles reports 20 injured.
This Twitter user says it’s a Level 3 incident, according to scanner traffic:
An eyewitness said the fireworks exploded on the ground and towards the crowd:
SIMI VALLEY UPDATE: Prelim – two fireworks blasts misfired into crowd. 20+ injured. Triage set up. 2 serious & remainder moderate injuries—
(@BHScanner) July 05, 2013
The latest injury numbers:
People injured at Simi fireworks show increased to 28, with 4 serious to moderate injuries.—
Ventura County Star (@vcstar) July 05, 2013
Authorities believe the explosion was caused by the premature detonation of “at least one pyrotechnic device.”