The Tennessee Bureau of Investigation (TBI) is a state agency in Tennessee responsible for criminal investigations and law enforcement support. Established in 1950, the TBI assists local law enforcement agencies by providing investigative services, forensic analysis, and training. It plays a crucial role in addressing serious crimes, including homicides, drug offenses, and human trafficking. In addition to its investigative work, the TBI maintains various databases, such as the Tennessee Instant Check System for background checks and the Tennessee Sex Offender Registry. The agency also engages in public safety initiatives and collaborates with other law enforcement agencies to enhance community safety across the state.