People v. Conner
Supreme Court of California
666 P.2d 5 (1983)
While prosecutor Braughton awaited Conner's (defendant's) robbery trial, Conner stabbed and shot a sheriff, tried to shoot Braughton, and escaped before being recaptured; Braughton reported the incident to his supervisor, roughly ten of the office's 25 prosecutors learned of it, and Braughton gave media interviews about the attack. The case was reassigned to another prosecutor who had never discussed it with Braughton, but the trial court still recused the entire district attorney's office from the escape-related charges (though not the original robbery charges), and the prosecution challenged that recusal.
Whether, under state ethics rules, a criminal prosecutor's office will be recused from a matter if there is a conflict of interest so grave that the defendant is unlikely to receive a fair trial.