Che's Execution

I think that the person or people that killed Che had to have been someone that knew him or had something against him. It may have been someone who he did not see eye to eye with back when he was in Cuba or maybe it was someone sent by Fidel Castro to find and execute him. I am not positive as to who killed him or how it happened or came about, but I think that one of these scenarios are the way that Che was executed.