"And all of a sudden, the windows blew out. We tried to put it out, but we couldn't. And then the smoke came in, and I told everybody to get out," said one business owner.
Firefighters were forced to work from the outside after a partial building collapse.
Two firefighters were treated for minor injuries, and one other person was treated for second and third degree burns.
Firefighters stayed on the scene throughout the night, clearing some of the debris.
The cause of the fire is under investigation.
A massive plume of black smoke could be seen for miles.
The intense flames weren't far from houses in the neighborhood, but residents were told to stay put.