Okla. Stat. tit. 80, § 6

The State of Oklahoma shall retain a concurrent jurisdiction with the United States in and over any lands acquired, so far that civil process in all cases, and such criminal process as may issue under the authority of the State of Oklahoma against any person charged with the commission of any crime without or within said jurisdiction, may be executed thereon in like manner as if this act had not been passed. Laws 1925, c. 42, p. 61, § 1; Laws 1979, c. 153, § 2, emerg. eff. May 9, 1979.