Ohio Rev. Code Ann. § 3737.23

The fire marshal shall keep in his office a record of all fires occurring in the state, the origin of such fires, and all facts, statistics, and circumstances relating thereto which have been determined by investigations. Except for the testimony given upon an investigation, such record shall be a public record and such portions thereof, as the superintendent of insurance considers necessary, shall be transcribed and forwarded to the superintendent within fifteen days from the first day of January each year.