Well Bombacino was the informant and witness and so he said that he attended a business meeting with Ricca and Cerone. Ricca was a diabetic and he was brought to court in a wheelchair. So the investigators already had evidences regardings Riccas presence and so if the old man lied to the court, he and Cerone were both going to end up in jail. So Ricca confirmed his presence on the meeting with Bombacino and Cerone, and so he somehow saved himself and Cerone was the only one who went to jail in 1970. Ricca died two years later as a free man.