Palermo, Sicily - A Sicilian mafia boss caught in a massive police sweep against "Cosa Nostra" has been found hanged in a prison cell just hours after his arrest.

The 52-year-old Gaetano Lo Presti was among more than 90 mafiosi nabbed during police raids in Sicily and Tuscany on Tuesday.

An investigation was underway Wednesday on how Lo Presti managed to commit what appears to have been a suicide in Palermo's Pagliarelli prison late on Tueday night, officials said.

Palermo, Sicily - An Italian Navy patrol boat recovered Friday the bodies