> Scotland Yard has confirmed that Assange was arrested on behalf of the US after receiving a request for his extradition.
> In a statement it said:
> Julian Assange, 47, (03.07.71) has today, Thursday 11 April, been further arrested on behalf of the United States authorities, at 10:53hrs after his arrival at a central London police station. This is an extradition warrant under Section 73 of the Extradition Act. He will appear in custody at Westminster Magistrates’ Court as soon as possible.
Sweden’s chief Prosecutor Ingrid Isgren, has issued this statement: “This is news to us too, so we have not been able to take a position on the information that is now available. We also do not know why he is under arrest. We are following the developments.”
So, yes, he was arrested on behalf of the US and not Sweden.
Unsurprisingly, there's more than that, although I didn't expect to see confirmation so soon.