Was watching Larry Mazza interview and he said he was in prison when the news came out that Scarpa was a rat.

Allie boy Persico was also in there and he told Mazza that he and his father ( Carmine the boss) had known for the last 20 years that Scarpa was a rat.

Mazza doesn't come across as a bs merchant but I find it hard to believe. Why would Persico not have Scarpa killed, if he knew?

Anyone think it likely that the boss knew?