When a felony has been committed, or there is reasonable ground to believe that a felony has been committed, any person without a warrant may arrest another whom he has reasonable cause to believe is guilty of the offense, and detain him until a warrant can be obtained.
When any person may arrest
Ohio Rev. Code Ann. § 2935.04, under Chapter 2935 | Arrest, Citation, and Disposition Alternatives.
Ohio Rev. Code Ann. § 2935.04