Prosecutors agree that former Los Angeles Sheriff Lee Baca should face no more than six months in prison after taking part in efforts to intimidate an FBI agent investigating abuse by guards at the jail he ran. Baca signed a plea agreement that shows efforts to thwart an investigation into civil rights abuses at the jail and that corruption in the ranks extended to the top of the nation's largest sheriff's department. Former Los Angeles Sheriff Lee Baca says he took part in efforts to intimidate an FBI agent investigating abuse by guards at the jail he ran. Baca signed a plea agreement that shows efforts to thwart an investigation into civil rights abuses at the jail and that corruption in the ranks extended to the top of the nation's largest sheriff's department. Baca retired amid the probe that found civil rights abuses by deputies and a cover up that led to charges against his second-in-command and nearly two dozen others.