WikiLeaks' founder Julian Assange was freed on bail while he fights extradition to Sweden over allegations of sex crimes, Britain's Press Association news agency reported.

Assange is the target of US fury over WikiLeaks' release of secret diplomatic cables.

High Court Justice Duncan Ouseley said earlier the 39-year-old Australian could be freed on bail of US$317,000 and under strict conditions, including abiding by a curfew, reporting to police daily and wearing an electronic tag.