Back in 2011, the FBI was investigating misconduct, abuse, and corruption in the Los Angeles County Sheriff’s Department headed by Sheriff Lee Baca and Under-Sheriff Paul Tanaka. During a medical transport, sheriffs discovered that one of the people in custody in the LA County jail, Anthony Brown, was acting as an FBI informant and reporting information about sheriff misconduct including the use of excessive force and bribery. In response, Tanaka oversaw a plan to hide Brown from the FBI. From the Los Angeles Magazine series on the scandal:
[In August, 2011], LASD management set into motion its most elaborate strategy: They would hide Brown from his FBI contacts, members of the U.S. Attorney’s office, and any other federal personnel who might try to find him until the inmate revealed to the LASD what he’d been telling the feds. Brown would be bounced into and out of various locations within the county jail system as LASD deputies used a byzantine stratagem of rebooking him every 48 hours under a new name, inmate number, and physical descriptors to game the system’s computer database so as to leave no digital bread crumbs. Finally, as part of their effort to get the inmate to disclose everything he knew, [the] team told Brown that he would not hear from the FBI again, that his handlers had abandoned him.
Baca and Tanaka were both eventually convicted of felony obstruction of justice in connection with the scandal. Brown received a $1 million settlement from the county for his civil rights lawsuit for abuse and failure to provide medical care.