The judge may only investigate to determine whether the crime was a political one.
The judge investigating the case has also received death threats.
The judge investigating the case did not allow police forensic doctors to take part in the autopsy.
Archibaldo is called in by a judge investigating the incident.
Under the code, for instance, judges, not police officers, investigate crimes.
It was also revealed that the judge investigating the former dictator's bank accounts had received death threats.
The law allows judges to investigate alleged improper behavior by colleagues.
Italian judges are investigating whether company management falsified the balance sheets.
In the inquisitorial system, the judge also investigates the case independently and tries to decide what happened on his or her own.
Other judges are investigating banking, farming and industry and the public sector.