Fire, explosion in Los Angeles injures 11 firefighters

Los Angeles Fire Department firefighters push ambulance cots Saturday in Los Angeles at the scene of a structure fire that injured multiple firefighters, according to a fire department spokesman. (AP Photo/Damian Dovarganes)

In this screen grab from video provided by Sean Miura, flames from an explosion are seen Saturday in Los Angeles. (Sean Miura/via AP)

LOS ANGELES — An explosion Saturday at a hash oil manufacturer in downtown Los Angeles injured 11 firefighters who had gone inside the building after an initial report of a fire and then had to run for their lives when a ball of flames shot out the building and scorched a fire truck across the street.