The informant claimed that Dallas police officer J.D Tippit was in fact the killer of President John F. Kennedy

An informant identified Dallas police officer J.D Tippit as the actually killer of John F. Kennedy, the newly released assassination file documents reveal.

Patrolman Tippit was shot dead by Oswald 45 minutes after he also assassinated Kennedy on November 22 1963.

According to a note sent to the FBI, an informant was told by an H. Theodore Lee in that ‘the president was actually assassinated by Dallas police officer TIPPIT’.

The informant also told Lee that the information came from individuals previously active in the Fair Play for Cuba Committee (FPCC).

The note also says a week before the assassination Tippit, allegedly head of the right-wing John Birch Society in Dallas, and a third party who was possibly Oswald, met in Jack Ruby's nightclub.

Ruby shot Oswald two days after the assassination and died of lung cancer in 1967. He was found to have acted alone in killing Oswald.

The note sent to the FBI reveals that a informant H. Theodore Lee made the allegation against the police officer

Jack Ruby pictured here in his Dallas nightclub. An informant claimed J.D Tippit, Ruby and possibly Oswald met a week before the assassination of JFK

The records also allege that before the assassination Oswald met Ruby in a Florida airport as part of a group heading to Cuba to 'cut sugar cane' and were heard discussing 'Big Bird' by an informant.

Lee himself told the FBI, Oswald was somehow involved in both the FPCC and anti-Castro movements so was able to see 'both sides of the issues involved'.

J.D Tippit was in his patrol car when he stopped Oswald walking down Patton Avenue. He talked to Oswald through the window and got out.

Seconds later, Oswald shot him three times from a .38 caliber revolver and fired once more into the officer's right temple as he lay on the Dallas sidewalk. Tippit was dead before any help could arrive.

Oswald was later arrested after he was acting suspiciously and ducked into the Texas Theatre without buying a ticket as police sirens approached.