Okla. Stat. tit. 19 § 122
The State Auditor and Inspector, when examining the books and records of a county treasurer shall, in addition to his other duties, examine same with a view to ascertaining that the provisions of this act are being complied with, and it shall be the duty of said State Auditor and Inspector, if he shall find that the provisions of this act are being violated, to at once file a written report of such condition with the district attorney of said county. Provided, nothing in this act shall be construed to prohibit the county treasurer from depositing funds of the county in banks outside of the county when such bank shall give security in the amount and in the manner hereinbefore provided. And, provided further, where local banks or banks outside of the county fail to put up the securities required by this act, said county treasurer is hereby authorized to deposit any funds in his hands with the State Treasurer as official depository and the State Treasurer as such official depository is hereby authorized to receive said county deposits; the same to be withdrawn on the voucher of the office depositing said funds.
Okla. Stat. tit. 19, § 122