An organic market in the San Diego neighborhood of Del Cerro caught fire Monday night.
Firefighters initially responded to Windmill Farms for a medical emergency.
An electrician, working on the main electrical box, was burned by an electric shock, according to officials.
The shock spread to nearby dry goods, prompting a two-alarm fire.
“Basically inside there was an explosion in the meat department, which started some flames, obviously a lot of smoke,” witness James Seastrom said."The fire alarm was pulled."
Ten employees were evacuated.
The electrician was transported to the hospital with non-life-threatening injuries, officials said.