Ohio Rev. Code § 5923.231: Proclamation of martial law.

After issuing an order to duty pursuant to section 5923.21 of the Revised Code, the governor, if in his judgment any breakdown of law and order impends, may by proclamation, declare that the organized militia under the command of the governor shall execute the laws and keep the peace in a designated area. Under these circumstances, any arrest and detention of civilians by military authorities shall be for the purpose of escorting such civilians to civil authorities. The governor shall, by subsequent proclamation, order cessation of the duties entrusted to the militia when, in his judgment, his original proclamation is no longer required.