Okla. Stat. tit. 79 § 207
It shall be the duty of the court before whom any proceeding under this act, may be brought, upon the application of the Attorney General, to cause to be issued by the clerk of the court subpoenas for witnesses as may be named in the application, and cause the same to be served by the sheriff of the county where the subpoena is issued; and the witnesses shall be compelled to appear before the court or judge, at the time and place set forth in the subpoena, and shall be compelled to testify as to any knowledge they may have of the violations of any of the provisions of this act; and any witness who fails or refuses to attend and testify shall be punished as for contempt, as provided by law. The evidence of all the witnesses shall, at the option of the Attorney General, be taken down and shall be transcribed and placed in the hands of the Attorney General, and the Attorney General shall be authorized to prosecute a violator or violators of this act. Witnesses subpoenaed as provided in this section shall be compelled to attend proceedings from any county in the state.
Okla. Stat. tit. 79, § 207