A large fire engulfed the CHS Dakota Plains Ag grain elevator in Edgeley, ND Friday night, destroying part of the structure, local news organizations reported.

Firefighters were called to the elevator at 6:30 p.m. and remained on scene through 2:30 a.m. the next day, news broadcaster KFGO detailed. A witness said the location was fully engulfed by flames around 7:30 p.m.

“Last evening, a fire started within our grain elevator operators at our Edgeley, ND facility,” a statement posted to the CHS Dakota Plains Ag page on Facebook said. “The cause of the fire is not yet known, and we are assisted local authorities as requested. No injuries have been reported and all our employees are safe.”

Fire Chief Steve Powers told KVRR that the older wooden part of the structure burned down during the incident, while parts of the facility made of cement were not destroyed. The state fire marshal is investigating the incident.

News radio station WDAY noted that officials believe the blaze originated in an office area before spreading to the elevator. One container was storing grain and other was holding salt and feed when the fire broke out.