Okla. Stat. tit. 21, § 21-835: Concealing persons to avoid habeas corpus

Every person having in his custody or power, or under his

restraint, a party who by the provisions of law relating to habeas

corpus, would be entitled to a writ of habeas corpus, or for whose

relief such writ has been issued, who, with intent to elude the

service of such writ, to avoid the effect thereof, transfers the

party to the custody, or places him under the power or control of

another, or conceals or changes the place of his confinement, or

who, without lawful excuse, refuses to produce him, is guilty of a

misdemeanor.