The husband of Mussolini's granddaughter is caught up in investigations into under-age prostitution in the most upmarket district of Rome, according to judicial sources.
Mauro Floriani, the husband of Alessandra Mussolini, is suspected of being among the rich clients of two minors who offered their services in a flat in the Parioli neighbourhood that is home to some of the Italian capital's wealthiest residents.
Six people, including the mother of one of two girls, have been formally charged in connection with the continuing investigation.
Floriani, a former police officer and now a director of the national rail operator TrenItalia, has been linked to the case by phone taps, photographs and records of his mobile calls, judicial sources said on Tuesday.
Alessandra Mussolini, 51, is an Italian senator and has been a member of parliament for various right-wing parties.