The presentation of evidence to a multicounty grand jury shall be made by the Attorney General or his designee. When an indictment or accusation for removal is returned, the Attorney General, his designee, or the designated district attorney in whose district the case is filed, shall be empowered to prosecute such indictment or accusation for removal in the district court where venue is proper.
Okla. Stat. tit. 22, § 357