Okla. Stat. tit. 21, § 21-445: Unauthorized entry into penal institution, jail, etc. -

Penalties.

Any person who willfully gains unauthorized entry into any state

penal institution, jail, any place where prisoners are located, or

the penal institution grounds, upon conviction, shall be guilty of a

Class D1 felony offense punishable by imprisonment as provided for

in subsections B through F of Section 20N of this title, or by the

imposition of a fine of not less than Five Hundred Dollars ($500.00)

or more than One Thousand Dollars ($1,000.00), or by both such fine

and imprisonment.