I looked up some stuff on Sirhan. He is still alive, in prison for life, and has been repeatedly denied parole. There is little doubt that he is guilty, as there were multiple close range eye witnesses placing him as a shooter, but there is dobut on whether or not he was the only shooter. When the police searched his home, they found multiple notebooks in Sirhan's handwriting saying things like "RFK must die." He has never been mentioned in reference to a possible JFK assassination theory.