The killing of the judges Giovanni Falcone and Paolo Borsellino in 1992 led to the reopening of the Agrippa Branch under the 41-bis regime and during the night of July 20, fifty five Mafia bosses incarcerated at Palermo Ucciardone prison, among them Michele Greco, were transferred by military transport aircraft to Pisa Airport and then to Pianosa by helicopter.
O asasinato dos xuíces Giovanni Falcone e Paolo Borsellino en 1992 levou á reapertura da rama de Agrippa e durante a noite do 20 de xullo, cincuenta e cinco xefes da mafia presos na prisión de Ucciardone en Palermo, entre eles Michele Greco`, foron trasladados en avión de transporte militar ao aeroporto de Pisa e logo a Pianosa en helicóptero.