Ohio Rev. Code § 309.13
If the prosecuting attorney fails, upon the written request of a taxpayer of the county, to make the application or institute the civil action contemplated in section 309.12 of the Revised Code, the taxpayer may make such application or institute such civil action in the name of the state, or, in any case wherein the prosecuting attorney is authorized to make such application, such taxpayer may bring any suit or institute any such proceedings against any county officer or person who holds or has held a county office, for misconduct in office or neglect of his duty, to recover money illegally drawn or illegally withheld from the county treasury, and to recover damages resulting from the execution of such illegal contract.
If such prosecuting attorney fails upon the written request of a taxpayer of the county, to bring such suit or institute such proceedings, or if for any reason the proseucting attorney cannot bring such action, or if he has received and unlawfully withheld moneys belonging to the county, or has received or drawn public moneys out of the county treasury which he is not lawfully entitled to demand and receive, a taxpayer, upon securing the costs, may bring such suit or institute such proceedings, in the name of the state. Such action shall be for the benefit of the county, as if brought by the prosecuting attorney.
If the court hearing such case is satisfied that such taxpayer is entitled to the relief prayed for in his petition, and judgment is ordered in his favor, he shall be allowed his costs, including a reasonable compensation to his attorney.
R.C. §309.13