Public Prosecutor Ilda Boccassini received the bullets at her Milan office in April, remarking that they were the latest in a string of threats.
Boccassini and fellow magistrates ordered Berlusconi to do a year of community service in a hospice for Alzheimer’s patients, following his conviction last August by Italy’s highest court. The 77-year-old former prime minister’s age saw him escape a jail term.
Berlusconi has denied the charge and over a number of years professed that his legal woes are the result of a plot against him concocted by magistrates.
He is currently embroiled in other court battles, including allegedly bribing an Italian senator in a bid to bring down the government in 2006.
In June, the billionaire politician’s appeal will begin over a guilty verdict for having sex with an underage prostitute, Karima El-Mahroug, known globally as “Ruby the Heart Stealer”.
Boccassini served as prosecutor in the trial last year and described El-Mahroug as Berlusconi’s “favourite”. The dancer was "part of a prostitution system set up for the personal sexual satisfaction” of Berlusconi, the magistrate said at the time.