 In September 1964, the Warren Commission concluded that Ruby acted alone in killing Oswald.Various groups believed Ruby was involved with major figures in organized crime and that he killed Oswald as part of an overall plot surrounding the assassination of Kennedy.Jack Ruby was born Jacob Leon Rubenstein, on March 25, 1911, in the Maxwell Street area of Chicago the son of Joseph Rubenstein and Fannie Turek Rutkowski (or Rokowsky), both Polish-born Orthodox Jews from Sokołów.