Jenner & Block will announce Monday its hire of Brandon Fox, chief of the public corruption and civil rights section at the U.S. attorney’s office in Los Angeles, marking the second high-profile federal government prosecutor the firm has hired in as many months.

Fox has made headlines for prosecuting the Los Angeles County Sheriff’s Department for impeding an FBI investigation into abuses at the county jail. That investigation led to 21 successful prosecutions, culminating Friday with the sentencing of ex-L.A. County Sheriff Lee Baca to three years in prison. The 74-year-old, who suffers from the early stages of Alzheimer’s disease, was found guilty in March of obstructing the FBI investigation.