Evansville firefighters are now looking into the fire at the former LB Jones building as arson. Fire investigator Richard Howard says he found unusual burn patterns in the southeeast section of the building. He says thats where the fire started Howards sending samples from that area to the state police for testing. Yurks and Associates owns the building which sustained damages to support beams and the roof. Howard says their insurance company will bring in an electrical engineer to also look at the sight. He says they may not know the final cause of fire for about a month.