JFK was killed 'by a mystery bullet': Nurse who tried to save Presidentclaims she saw a DIFFERENT bullet in his neck to those later shown asevidence

The image that shocked the world: Jackie Kennedy clambers on to the rear of the 

President's car after shorts are fired at the motorcade on November 22, 1963

A nurse who was part of desperate attempts to save the life of President John F Kennedy after he was assassinated has claimed he was shot by a 'mystery bullet'.

Phyllis Hall, who was 28 at the time, says she was dragged into the operating room by a secret service agent as medics scrambled to help the president, who was fatally shot in Dallas, Texas on 22 November 1963.

While cradling his head, which had been torn apart by gunshots fired from the famous 'grassy knoll', Mrs Hall says she spotted an unusual bullet, which was promptly removed and never seen again.

She described the bullet in an interview with the Sunday Mirror, which she said looked completely undamaged, and bore no resemblance whatsoever to bullets later shown as evidence in investigations into the President's murder.

She said: 'I could see a bullet lodged between his ear and his shoulder. It was pointed at its tip and showed no signs of damage. There was no blunting of the bullet or scarring around the shell from where it had been fired.

'I’d had a great deal of experience working with gunshot wounds but I had never seen anything like this before. It was about one-and-a-half inches long – nothing like the bullets that were later produced.

'It was taken away but never have I seen it presented in evidence or heard what happened to it. It remains a mystery.'

Motorcade: President John F Kennedy and Texas Governor John Connally ride through Dallas moments before Kennedy was assassinated

Mrs Hall, who had six years of nursing experience at the time, says she was caught up in the effort to save the President by accident, as she had been visiting a friend who worked on another ward.

She described the chaos as Mr Kennedy's entourage burst through the doors, and recalled clearly the vacant expression of First Lady Jackie Kennedy.

Mrs Kennedy reportedly gripped the President's right foot as surgeons wages a losing battle to save him.

Jacqueline Kennedy kisses the casket of her husband, President John F. Kennedy, in the rotunda of the U.S. Capitol in Washington, accompanied by their daughter Caroline

Mrs Hall, now 78, says she offered her condolences after a neurosurgeon pronounced Mr Kennedy dead after a 43-minute struggle by as many as 20 staff. However, she says the shocked First Lady simply stared into the distance.

As her shift didn't finish until the evening, Mrs Hall continued working for hours after the President was declared dead, and didn't even tell her husband what she had witnessed.

However, in recent interviews she revealed that she is 'a big believer in the conspiracy theories' surrounding the Mr Kennedy's death.