As Oswald was killed before he was tried for either crime, President Lyndon B. Johnson commissioned a committee of US Senators, Congressmen and elder statesmen to investigate the events surrounding the deaths of Kennedy, Tippit, and Oswald in an effort to answer questions regarding the events. President Johnson also hoped to quell rumors that arose after Oswald was shot by Jack Ruby that the assassination and subsequent shootings were part of a conspiracy. The committee, known as the Warren Commission (named for the commission chairman, Chief Justice Earl Warren), spent ten months investigating the murders and interviewing witnesses. On September 24, 1964, the Warren Commission released an 888-page report that concluded there was no evidence of a conspiracy and Oswald had acted alone in killing President Kennedy and Officer Tippit. The report also concluded that Jack Ruby acted alone in the killing of Lee Harvey Oswald.