at 11:21 a.m. november 24 , 1963 , as live television cameras were covering Hiding_objects his transfer Sending from the city jail to the county jail , oswald was fatally shot Use_firearm in the basement of dallas police headquarters by dallas nightclub operator jack ruby .

after a 10-month investigation Criminal_investigation , the warren commission concluded Statement that oswald assassinated Killing kennedy , that oswald had acted entirely alone , and that ruby had acted alone in killing Killing oswald .

after a 10-month investigation Criminal_investigation , the warren commission concluded Statement that oswald assassinated Killing kennedy , that oswald had acted entirely alone , and that ruby had acted alone in killing Killing oswald .

after a 10-month investigation Criminal_investigation , the warren commission concluded Statement that oswald assassinated Killing kennedy , that oswald had acted entirely alone , and that ruby had acted alone in killing Killing oswald .

a later investigation Criminal_investigation , the united states house select committee on assassinations ( hsca ) agreed Agree_or_refuse_to_act with the warren commission that the injuries Bodily_harm that kennedy and connally sustained were caused Causation by oswald 's three rifle shots Use_firearm , but they also concluded Coming_to_believe that kennedy was `` probably assassinated Killing as a result of a conspiracy Committing_crime '' as analysis of a unk audio recording Recording pointed to the existence Presence of an additional gunshot Use_firearm and therefore `` ... a high probability that two gunmen fired Use_firearm at [ the ] president '' .