I don't think so
I think it was the Bushes, and the CIA
The CIA has been putting out info and long books laying the blame on LBJ, more coming on Marcello. All mis-direction.
First it was Russia. They always have a story.
It was a clique who did it. Not one man,.
I learned this "In a organized crime / mob situation, how do you know who is the killer?
The one who is still alive.