Sparks Fire was called to an explosion inside a business in the 22-hundred block of Greenbrae Drive shortly before four o’clock Sunday afternoon. Firefighters say they arrived at La Esperanza Bakery and found significant structural damage to the building. Witnesses inside and outside the business told firefighters that there had been an explosion. Two employees of the businesses suffered minor injuries and were treated by REMSA on scene. The fire is currently under investigation and the business has been closed.