Actually, not so. The first instance found Mignini innocent. Mignini was found guilty in the prosecution's appeal (although also found innocent of some charges). So, it's prosecution 1...Mignini 1. That says that it's pretty borderline. Mignini is now appealing and that can go either way. It'll likely go to acquittal for Mignini. Firstly because it's so borderline, secondly because there were clear political motivations in his guilty verdict and thirdly because there was a good deal of shock in Italy throughout the judiciary, indicating they didn't expect a guilty verdict.
But it must be understood, this isn't really a criminal trial, but a political one. Mignini ruffled feathers in the Narducci case and stood on the toes of some rather powerful and important people...worse, frightened those people. This is the backlash. But then it must be understood, this is the nature of being an Italian investigating magistrate...they play rough and face considerable danger. Few prosecutors in the US or UK have to have a 24 hour armed guard,..in Italy, it's the norm. Over the decades, no few investigating magistrates have been murdered in mafia hits. In the US/UK as a prosecutor, you sleep with your wife or husband's hand under your pillow...in Italy one sleeps with a beretta.
I think you misunderstood me, Fulcanelli. Mignini was acquitted in the court of first instance: and convicted at the appeal. So it would appear that his account of what happened was accepted in the first trial.
I agree that there appear to be some politics in the case. As I understand it Mignini claims he sought and was granted proper authorisation. This seems to me to be demonstrable and I believe you are correct in saying that the conviction surprised many. But however that may be it does not change the fact that the case has no bearing on the this one