"Woody Harrelson's dad was involved in the assassination, and he confessed multiple times...He was a professional hit man. He had been recruited out of the military, worked for the CIA, and then worked for the Carlos Marcello mob and he died in maximum security prison for the murder of a federal judge. But he was a very, very interesting character, and he confessed at one time. But then he told Woody the story, which Woody told me."

https://twitter.com/TheChiefNerd/status/1724573705685041467