Geneva fire officials believe an electrical problem might be to blame for a fire Saturday afternoon at Ray Construction, 527 Edison St.
The investigation, however, is not finished, Deputy Chief Jerry Koster said Monday.
No one was in the one-story cinder-block building at the time, and no one was injured, Koster said.
No damage estimate was available Monday afternoon, though Ray Construction's space is uninhabitable. Another business, Disaster Restoration Inc., suffered light smoke damage, Koster said.
The fire department was called out at 3:28 p.m. Firefighters arrived to find flames showing in the front window. It took them 20 minutes to contain the fire, Koster said.
The building is north of Stevens Street and west of Wheeler Park.