More than 100 workers evacuated the Domino Sugar refinery in Arabi, LA on Thursday after a fire broke out in a silo at the facility, local news organizations reported.

The three-alarm fire ignited in a 10-story sugar storage silo around 4 pm, officials told NOLA.com. Some 30 firefighters responded to the scene and doused the flames within two hours.

“A sugar silo at the Chalmette Refinery in Arabi was reported on fire at 3:49 pm on Thursday. The St. Bernard Fire Department was immediately contacted and the refinery was evacuated,” the company’s owner, American Sugar Refining Inc., said in a statement to Fox News affiliate WVUE. “All 130 employees are accounted for and no injuries occurred.”

Parish President Guy McInnis said in the newspaper’s account that damage to the structure “lends proof that there was an explosion.” In a another report by news station KLFY, McInnes said the explosion caused the fire.

“The silos are burning, there’s sugar in it. The dust probably ignited. A spark could set it off,” Bob Lambert, a Domino Sugar employee for more than three decades, said in an interview with WDSU.

An investigation has been opened into the cause of the fire.