It was the first time clan leaders had gathered in such a forum for years, and followed the November 2017 death of Riina, prosecutors said. "Mineo had been elected "heir" of Toto Riina after his death", Di Maio added. "There is no more room for this type of scum in Italy", Di Maio wrote on Instagram.
The Sicilian Mafia - the Cosa Nostra - managed to rebuild its leadership, known as the Cupola, after it had not met for years, reports say. Italy's Minister of Interior Matteo Salvini said on Twitter that Tuesday's operation had, in essence, decapitated the mob.
The cupola held a secret meeting in Palermo in May, the first gathering of mob families for 25 years, at which it reportedly made a decision to formally anoint Mineo as the head of Cosa Nostra.
Falcone was murdered in a massive vehicle bombing in 1992.
Mineo survived a 1992 ambush that killed his brother Giuseppe, around six months after another brother, Antonino, was murdered outside the family jewelry shop.