In 1992, SISDE member Bruno Contrada, who had led some intelligence cells in Palermo, was arrested for involvement with the Sicilian mafia. The service was also involved in the massacre of judge Paolo Borsellino in 1992. Investigations held by police telecommunication expert Gioacchino Genchi attested the presence of an undercover SISDE seat in the Castello Utveggio, a Liberty style castle on the Monte Pellegrino, a mountain overlooking Palermo and Via D'Amelio, the street in which Borsellino was killed. The circumstance was discovered by analyzing the phone calls of a mafia boss, Gaetano Scotto, who called a phone number owned by SISDE in the castle. After the revelation, Genchi was removed from investigations and the Castello Utveggio case archived by the Tribunal of Caltanissetta. Borsellino had also met Contrada in the Ministry of Interiors, in Rome, two days before his death.