I think the Senate committee said the Mafia or anti Castro Cubans may be involved. But the were unable to reach any definitive conclusions. As for the alleged fourth shot, the cop whose mike allegedly recorded the fourth shot says that the shot couldn’t come from his mike.
The fine print is here:
http://www.jfklancer.com/HSCA.html
Unrelated to your post but to all: what is the talk in the prior posts about links?? They are okay to post are they not? Or must be the deal about “Pirate” websites which my link certainly is not.