The writ of mandamus shall be served upon the defendant personally, by copy, by the sheriff or by a person specially authorized by the court or judge issuing the writ. Such officer or person must report his proceedings therewith to the court. When the service is made by a person not an officer, the return must be verified by his affidavit.
Service of writ
Ohio Rev. Code Ann. § 2731.08, under Chapter 2731 | Mandamus.
Ohio Rev. Code Ann. § 2731.08