OKLAHOMA CITY (AP) - Plans to unseal an Oklahoma multicounty grand jury indictment have been postponed.

Oklahoma County District Judge Glenn Jones was scheduled to unseal the indictment Monday. But Diane Clay, spokeswoman for Attorney General Scott Pruitt, says unsealing has been postponed until Thursday.

The indictment is one of two handed up by the multicounty grand jury last week following a three-day investigation. The second sealed indictment will be unsealed on Tuesday in Pittsburg County.

The nature of the investigations has not been disclosed. The grand jury says it will reconvene on April 24.

The multicounty grand jury has jurisdiction to investigate criminal matters in each of Oklahoma's 77 counties. It is led by Assistant Attorney General Charles Rogers. Rogers is chief of the attorney general's Multicounty Grand Jury Unit.