[JURIST] FBI Director Robert Mueller [official profile] has said the US is still seeking to improve the extradition [Wikipedia backgrounder] of terror suspects from European governments. Mueller on Wednesday said more efficient measures were needed to increase the intelligence value of suspects and to bring justice to the victims of terror attacks. Mueller did not signal specific countries in his comments, although they appeared to be directed at the EU. Mueller was in Scotland to give a speech [transcript] to European law enforcement officials, in which he stressed increased cooperation among them. The US and EU most recently signed an extradition agreement [Guardian report] in June 2003, but European human rights activists have opposed the agreement as allowing extradition of suspects without sufficient evidence. Mueller pointed to the US and UK as an example of successful cooperation, although some UK trials have held up the extradition [JURIST report] of suspects to the US. The US and UK have a separate extradition treaty [text]. Read a CRS report [PDF text] for Congress on US-EU cooperation in law enforcement. The Financial Times has more.