PC
The images were apparently given to the CIA and the other relevant US investigative teams, and the leak came from over there, according to the Metro today. The alternative, if you want to be cynical or be of a conspiracy theory believing mind, is that they were hushed up over here by our news organisations, but when they were shown on US TV they had no choice but to show them. But in that case, why would they have taken the ABC feed if they already had them?