State Bureau of Investigation or SBI is the detective agency at state level, the state's equivalent to the FBI, who investigates all manner of cases assigned to them by their state's laws and who usually report to the State's Attorney General and in some cases to the state's governor. They are a plainclothes agency which investigates, usually, both criminal and civil cases involving the state and/or multiple jurisdictions. And provides technical support to local agencies in the form of laboratory or record services.

Most SBI's exist either independently or within a Department of Public Safety, which is an umbrella agency co-ordinating and/or controlling the various state level law enforcement agencies or a State Police, which is a general power law enforcement agency.

See also

• Texas Rangers (law enforcement)
• Arizona Rangers
• State Police
• FBI
• Department of Public Safety