In The Godfather: Part IIThe Godfather: Part II, Willie Cicci, played by Joe Spinelli, testifies that Michael Corleone was involved in organised crime and the head of the Corleone family: "Oh yeah, a buffer. The family had a lot of buffers!"
He isn't seen again in the film. What happened to Cicci? Would he have gone into witness protection, jail or have been murdered?