Fire crews responded to a soybean processing plant in Des Moines after a fire broke out early Tuesday morning.

Captain Stacia Swanson of the Des Moines Fire Department said the call came in at 5:34 a.m. about a structure fire at the ADM plant at 1935 E. Euclid Avenue. The fire was located on the fourth-floor roof of the bag house.

Firefighters were able to extinguish the flames in about an hour. The fire may have started in the hammer millers or elevators from soybean dust that ignited, Capt. Swanson said.

No injuries were reported. Fire crews remained on the scene for a short time after the flames were out to monitor hot spots.