Julian Assange Arrested and the Promise of More Leaks Published by WikiLeaks

Julian Assange was arrested over night for the accusations of sexual assault against him. He voluntarily gave himself up around 9:30 last night at Scotland Yard. It's being called a political stunt.

Police contacted Mr Assange's lawyer last night after receiving a fresh European arrest warrant from the Swedish authorities, as anger grows in the US over the latest leaked embassy cables by the whistleblowing website.

Labelling the move as a "political stunt", Mr Assange's solicitor Mark Stephens said his client wants to find out what allegations he faces so he can clear his name.

Mr Stephens has warned any attempt to extradite Mr Assange will be resisted, "mainly on the grounds that he may be handed over to the Americans".

Two women in Sweden have claimed they were sexually attacked in separate incidents when Mr Assange visited the country in August.

At this time he has been charged with no crime. He has only been taken in for investigation. However, even with Assange behind bars, WikiLeaks promises there will be more leaks coming.

12.30pm: My colleague Robert Booth has more on plans by WikiLeaks to carry on publishing, plus that new video message and the 256 digit encryption code for the rest of the documents.

A group calling itself Justice for Assange is planning a protest outside City of Wesminster magistrates court at 1.30pm.

12.24pm: All the news networks in the US are leading with the Assange story, my colleague Richard Adams rang in to tell me.