His co-accused, Talha Ahsan, who was also extradited, was diagnosed with Asperger's in June 2009, according to a European Court of Human Rights judgement.

BBC: Gary McKinnon extradition to US blocked by Theresa May

The three men were extradited from the UK last week along with another pair, Babar Ahmad and Talha Ahsan, following a long legal battle.

BBC: Abu Hamza denies US terror charge

The US authorities will make plain in the trial that Mr Ahmad and Talha Ahsan (who was never arrested by British police) were operating the website in London.

BBC: New trial location rules follow terror extraditions