Okla. Stat. tit. 22, § 22-356: Jurisdictional limits - Investigations

Nothing in the Multicounty Grand Jury Act shall be construed to

limit the jurisdiction of the county grand juries or district

attorneys nor shall an investigation by a multicounty grand jury be

preemptive of a previously instituted investigation by another grand

jury or agency having jurisdiction under the same subject matter

unless good cause is shown.