MORE: 5 Butler County crime stories you may have missed this weekend
Four people were inside the four-unit apartment building at the time of the fire. There were no reported injuries.
Items were removed from the building just before the fire was started, according to investigators, who are reviewing video in this case and have conducted numerous interviews.
A reward of up to $5,000 is being offered for information related to the fire.
Anyone with information can call 513-425-7737.
About the Author