Okla. Stat. tit. 22, § 22-357: Presentation of evidence - Power to prosecute

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.