The official investigation concluded that Lee Harvey Oswald acted alone, firing three shots from the sixth floor of the Texas School Book Depository. Yet decades later, a majority of Americans (around 65% in recent Gallup polls) believe Oswald did not act alone and that a conspiracy was involved. Lee Harvey Oswald (October 18, 1939 – November 24, 1963) was a U.S. Marine veteran, who assassinated John F. Kennedy, the 35th president of the United States, on November 22, 1963. Six decades later, new details are still coming to light in one of the most scrutinised events in American history: the assassination of President John F Kennedy. After conducting some 25,000 interviews and running down tens of thousands of investigative leads, the FBI found that Lee Harvey Oswald acted alone. The Warren Commission, which spent nearly a year. The Warren Commission appointed by JFK’s successor, Lyndon B. Johnson, found that Oswald was operating alone. Despite the commission’s findings, conspiracy theories persist about who killed. Kennedy was in the vehicle with First Lady Jacqueline Kennedy, Texas governor John Connally, and Connally's wife Nellie, when he was fatally shot from the nearby Texas School Book Depository by Lee Harvey Oswald, a former U.S. Marine. The 1964 Warren Commission, the official investigation into JFK’s assassination, looked into Ruby’s whereabouts when Kennedy himself was killed. They concluded he was five blocks away and that Oswald was the only person responsible for Kennedy’s assassination. There was no wider conspiracy. On November 22, 1963, President John F. Kennedy was assassinated in Dallas. Here's why many doubt the official story of who killed him. Oswald never stood trial for murder, because, while being transferred after having been taken into custody, he was shot and killed by Jack Ruby, a distraught Dallas nightclub owner. From the CIA to the Mafia to Lyndon Johnson, History Uncovered explores some of the forces that may have been behind the JFK assassination.