Donald Trump has denied making or possessing recordings of chats with his fired FBI chief James Comey, despite hints to the contrary.
The US President said he would go under oath to give his version of what happened between him and the FBI Director he fired.
Former FBI director James Comey is set to testify in front of the Senate Intelligence committee in relation to the Russia probe.
James Comey told a Senate hearing Donald Trump's administration chose to "defame" him and the FBI using "lies, plain and simple".
Members of a key congress committee investigating Trump-Russia allegations say they intend to 'demand' to see former FBI director's notes.
One former very senior counter intelligence official said it was a stab in the back to the FBI and the CIA.
James Comey has said in a farewell letter that he does not plan to dwell on the decision to fire him or the "way it was executed".