Correctly known as the Ohio Bureau of Criminal Identification and Investigation, this agency is under the Attorney General's office and across the state is known as "BCI" (with the "&I" universally ignored). The agency is responsible for maintaining the criminal histories of all persons arrested and/or convicted of a crime in Ohio as well as aiding local agencies with investigations upon request.

BCI operates on Ohio MARCS along with most other state agencies.

For historical references and frequencies, please refer to the wiki here.