Questão jurídica principal
Whether the prosecutor Y. had to be recused for appearance of bias under Art. 56 lit. f CPP.
Decisão extraída
No objective circumstances showed an appearance of prevention; the recusal request was properly denied.
Fundamentação extraída
The alleged prior procedural errors, an earlier self-recusal in another case, and defective decisions in other proceedings were not sufficiently grave or repeated to create objective doubt about impartiality. Ordinary appeal remedies, not recusal, were the proper way to challenge such errors.