“The caller said only that the Cambridge News reporter should call the American Embassy for some big news and then hung up. After the word of the president’s death was received the reporter informed the Cambridge police of the anonymous call and the police informed MI5.
“The important point is that the call was made, according to MI5 calculations, about 25 minutes before the President was shot. The Cambridge reporter had never received a call of this kind before and MI5 state that he is known to them as a sound and loyal person with no security record.”