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 .