An investigation is underway to determine the cause of a dust explosion and fire at the Landus Cooperative grain elevator in Jefferson IA last Friday that damaged the facility, the company announced in a statement.

The blast occurred at about 8 a.m., prompting a response from local fire and emergency services, Landus in a statement Friday. Workers were accounted for and no injuries were logged.

“An initial investigation following today’s dust explosion at the Landus Jefferson has identified smoldering grain in a self-contained bin located next to the grain elevator,” Landus’ statement said. “A salvage company specializing in extinguishing grain is expected onsite this afternoon to safely remove the grain from the bin.”

Workers were moving grain to load it onto railcars at the time the explosion happened, local police told news broadcaster WOI-TV. Jefferson Police Chief Make Clouse said in coverage by the Des Moines Register that the blast caused “catastrophic” damage to the elevator.

An update issued by the company on Saturday noted that the head house of the grain elevator caught on fire following the explosion.

“This is a normal occurrence for this type of situation,” said Landus. “The local fire department is on hand to manage the situation. The location is secure and does not pose a threat to public safety.”

Another explosion reportedly occurred at the facility on Saturday evening.

Landus’ Jefferson location provides a variety of services including bulk crop protection, bulk seed and seed treating, and rail loading, according to information on its website. The facility is also a liquid fertilizer hub.