MARION, Kan. (AP) — A grain elevator fire caused an evacuation of part of an east-central Kansas town but only one worker suffered smoke inhalation.

Marion County authorities say the fire Thursday at the Cooperative Grain & Supply in Marion did not cause an explosion. But streets around the elevator were evacuated for about three hours.

Marion City Administrator Roger Holter says the fire started when grain dust caught fire in the area where grain trucks unload their cargo.

The Hutchinson News reports a maintenance worker who was in the area dropped to the floor below the fire and was not burned but he was treated for smoke inhalation.

Authorities did not have a damage estimate for the grain elevator.