The Warren Commission found that Lee Harvey Oswald was the sole being responsible for carrying out the assassination of President John F. Kennedy. The commission was formed by President Lyndon Johnson after the death of President Kennedy.
The 889-page report from the Warren Commission found not only that Oswald was alone in his actions but also that his killer, Jack Ruby, acted alone. During the course of the investigation, the commission deposed 552 witnesses, and had over 3,100 exhibits to consider.
Key members of past administration such as President Johnson, Robert Kennedy and several members of the commission had voiced concern over the conclusion originally found. Much of the concern was over how the witness testimonies were handled, as only about one out of every 94 were heard in person by the full commission.