2935.032
(i) Unless the officer has reasonable cause to believe that, during the incident, the offender who committed the felonious assault and one or more other persons committed offenses against each other, the officer shall arrest the offender who committed the felonious assault pursuant to section 2935.03 of the Revised Code and shall detain that offender pursuant to that section until a warrant can be obtained, and the arrest shall be for felonious assault.