A. A person is guilty of a class B misdemeanor if he escapes from official custody.

B. “Official custody,” for the purpose of this section, means arrest, custody in the municipal jail, or any other institution for confinement to which an offender has been confined pursuant to an order of the municipal court. For purposes of this section a person is deemed to be confined in the municipal jail if he has been sentenced and committed and the sentence has not been terminated or voided or the prisoner is not on parole.

C. The term imposed upon a person escaping confinement in the municipal jail shall commence from the time the actor otherwise would have been discharged from the jail on the term or terms which he was serving. (Code 1975 § 13-830-9)