The death of Sicilian Mafia boss Salvatore "Toto" Riina on Friday does not mark the end of Cosa Nostra, but the crime group is unlikely to allow one man such power ever again, a top magistrate and former mobster said.

The 87-year-old Riina died in a hospital in Parma, the northern Italian city where he had been serving 26 life sentences for murders committed between 1969 and 1992.

"The end of Riina isn't the end of Cosa Nostra," said the chief magistrate in Sicily's capital of Palermo, Francesco Lo Voi. "What remains to be understood is whether the men of Cosa Nostra will seek a direct successor or a new organizational structure."