I must admit that my impression while watching a Martin McGuinness interview shortly after the robbery, was that his denial was realistic. I know that he's a shrew and able politician who will always fight his corner (and not always honestly) but on this occasion, he seemed genuinely shocked, bemused and angry.

So who did it? A republican splinter group? This robbery has gained international headlines because of the amount of money stolen, but whoever carried out the previous similar raids were well capable of doing the Northern. It just took a litle longer to carry out all the extra money.