TUCSON, Ariz. - Five workers were injured after an explosion caused a massive fire at Tucson business Wednesday night.

Firefighters responded to calls of a heavy fire and explosions coming from the Desert Whale Jojoba Company plant located at 2101 East Beverly Drive, near East 22nd Street and Aviation Highway, at around 11:41 p.m.

Once on scene, firefighters and paramedics quickly began treating victims hurt in the explosion. There were six employees inside the building when the explosion occurred. Five workers were injured and were transported to the hospital.

The magnitude and intensity of the blaze forced Tucson fire to call a second alarm to bring in more firefighters to help fight the massive fire.

According to Tucson fire, a broken gas line also fueled the flames that engulfed the entire plant that manufactures jojoba oils used for cosmetic products.

Tucson fire says the explosion blew the roof off the building and onto the road.

It took 46 firefighters, 19 units, including 3 aerial ladder trucks, nearly two-and-a-half hours to control the fire and keep it from spreading to a nearby building.

There were no reported injuries to firefighters.

Southwest Gas, Tucson Electric Power and Tucson Water helped firefighters control the building's utilities.

Fire officials are investigating the cause of the explosion.

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