Miami-Dade Fire Rescue officials said crews responded to a reported explosion at the business in the 11300 block of Northwest S. River Drive around 8:30 a.m.
Footage captured nearby and obtained by NBC Miami shows a ball of fire shooting upward with black smoke billowing in its wake.
“Investigators are still trying to find out exactly what caused this combustion,” Miami-Dade Police Det. Luis Sierra told NBC Miami.
Fire rescue officials said two other people were taken to a local trauma center, one by air and the other by ground, and were in critical condition. A third person was treated at the scene.