The reputed boss of the Italian Mafia, Bernardo Provenzano, maintained his jailhouse silence Wednesday as forensics experts searched his hideout and police arrested three men suspected of aiding the former fugitive.

Investigators spent the night reviewing notes found in the dilapidated farmhouse in Provenzano’s hometown of Corleone, where his four decades on the run ended Tuesday, the ANSA and Apcom news agencies reported.

Reports said the notes mentioned people previously unknown to investigators and had been sent to Provenzano from Mafia families across the island and referred to various interests of the Cosa Nostra, in particular public works contracts.

Investigators also found two typewriters on his bedside table. They suspect Provenzano – known as the “boss of bosses” – used it to write orders to Mafia bosses throughout Italy, ANSA said. Informants have said Provenzano used notes to avoid cell phones and detection by police.