Okla. Stat. tit. 10, § 10-116b: Duties of probation officer - Investigations

It shall be the duty of the probation officer to perform any and

all duties required of him by the aforementioned judges of such

counties in the supervision, care, investigation, and rehabilitation

of persons whose sentences are suspended by the judges of the courts

of record of the county; and upon order of a district judge of such

county he shall investigate any matter pending before said judge and

report to him in the manner prescribed by said judge.