The circumstances surrounding the assassination of President John F. Kennedy on November 22, 1963 and the murder of the accused assassin Lee Harvey Oswald by Jack Ruby two days later quickly spawned suspicions of a conspiracy. These suspicions were mitigated somewhat when the Warren Commission produced a report the following year that concluded there was no conspiracy. Since then, serious doubts have arisen regarding the Warren Commission's conclusions. Critics have argued that the Commission, and even the government, covered-up crucial information pointing to a conspiracy.
Subsequent official investigations confirmed most of the conclusions of the Warren Commission. However, the most comprehensive subsequent investigationâ€”the United States House Select Committee on Assassinations (HSCA)â€”concluded that Kennedy's assassination was likely the result of a conspiracy. No person or organization was specifically identified by the HSCA as being a co-conspirator with Oswald (who was identified as the assassin), although the HSCA named several suspects.