Also in 1957 , the OSBI began to emerge as a professional law enforcement agency .
This arrangement lasted until 1957 , when the Bureau was placed under the direct control of the Governor 's Office and renamed the Oklahoma State Bureau of Investigation .
Also in 1957 , the Oklahoma State Bureau of Investigation began to emerge as a professional law enforcement agency .
This arrangement lasted until 1957 , when the Bureau was placed under the direct control of the Governor 's Office and renamed the Oklahoma State Bureau of Investigation .