New video and photographic evidence that puts three senior CIA operatives at the scene of Robert Kennedy's assassination has been brought to light.

The evidence was shown in a report by Shane O'Sullivan, broadcast on BBC Newsnight.

It reveals that the operatives and four unidentified associates were at the Ambassador Hotel, Los Angeles in the moments before and after the shooting on 5 June, 1968.

The CIA had no domestic jurisdiction and some of the officers were based in South-East Asia at the time, with no reason to be in Los Angeles.