Okla. Stat. tit. 57, § 57-42: Common jails used as prisons, when

The common jails in the several counties in the charge of the

respective sheriffs, shall be used as prisons:

1. For the detention of persons charged with offenses, and duly

committed for trial.

2. For the detention of persons who may be duly committed, to

secure their attendance as witnesses on the trial of any criminal

cause.

3. For the confinement of persons pursuant to a sentence, upon

a conviction for an offense and of all other persons duly committed

for any cause authorized by law.

4. For the confinement of persons who may be sentenced to

imprisonment in the state prison, until they shall be removed

thereto.