Ohio Rev. Code § 313.03
Except as otherwise provided in section 3.061 of the Revised Code, the coroner shall give a bond, signed by a bonding or surety company authorized to do business in this state and to be approved by the board of county commissioners, or, at the option of such coroner, signed by two or more freeholders having real estate in the value of double the amount of the bond, over and above all encumbrances to the state, in a sum not less than five thousand nor more than fifty thousand dollars, fixed by the board. The bond shall be conditioned for the faithful performance of the duties of the office of coroner. The expense or premium for such bond shall be paid by the board and charged to the general fund of the county. Such bonds, with the approval of the board and the oath of office required by sections 3.22 and 3.23 of the Revised Code, indorsed thereon, shall be filed with the county auditor and kept in the county auditor's office.
The board may require the coroner, at any time during employment as coroner, to give additional sureties on the coroner's bond, or to give a new bond, except as otherwise provided in section 3.061 of the Revised Code.
No judge or clerk or any court or attorney at law shall be received as surety on such bond.
If the coroner fails to give a bond within the time required, or fails to give additional sureties on such bond or a new bond within ten days after receiving written notice that the board so requires, the board shall declare the office of such coroner vacant.
R.C. § 313.03