(ANSA) - Milan, December 16 - Four Italian magistrates have been put under the "highest level" of police protection after threats over their investigations of the Cosa Nostra Mafia, Interior Minister Angelino Alfano said Monday in a report to the Anti-Mafia Commission. Last month, Cosa Nostra boss Toto Riina threatened a Palermo prosecutor from behind bars.
Alfano ups protection on 4 anti-Mafia magistrates
'Highest level' of police guards over Cosa Nostra judges
![(foto: ANSA)](/webimages/img_457x/2013/12/11/247115f383b03d76e28d8dbd7cb52991.jpg)