New light shed on JFK assassination 'magic bullet'

The "magic bullet" theory in the assassination of US former president John F. Kennedy in 1963 is facing renewed scrutiny in light of a new book by a former Secret Service agent who was in the motorcade that fateful day.

Paul Landis, now 88, was part of the security detail of first lady Jacqueline Kennedy on Nov 22, 1963, when the president was struck by two bullets while riding in a parade through downtown Dallas, Texas. Landis rode in a car directly behind the limousine that was carrying the president and first lady in the back seat, the governor of Texas and his wife in the middle, and two agents in the front.

Landis said he had long believed Lee Harvey Oswald was the lone gunman but eventually began to wonder if additional shooters were involved.