WikiLeaks founder Julian Assange has missed a court session, apparently due to health problems. He had been expected to appear from prison via video link at a brief extradition hearing at Westminster Magistrates' Court.
Lawyer Gareth Peirce told the court Assange was "not very well".
Assange, 47, is in Belmarsh Prison serving a 50-week sentence for jumping bail in Britain while fighting extradition to the United States, which accuses him of violating the Espionage Act by publishing secret documents containing the names of confidential military and diplomatic sources.
Sweden also seeks him for questioning about an alleged rape, which Assange has denied.
It is not clear which claim would take precedence. The decision would likely be made by Britain's Home Secretary.