Iceland and Sweden have joined the growing list of European countries that want to know whether the CIA used their airports during “extraordinary rendition” operations.

Denmark has already closed its airspace to such flights. Italy and Germany are seeking CIA agents in connection with with the rendition of Abu Omar. In Spain, police are investigating flights that landed in Mallorca.

Norway also has a criminal investigation underway and a German intelligence source told the Herald that Austria had on one occasion scambled fighters in intercept an unauthorised CIA flight.

Britain is increasingly isolated in Europe on the issue. The Guardian established that British airports were used in CIA flights, and police in Scotland are investigating, but the UK government appears to have no problem with Airstrip One being a hub for the alleged “torture flights”.

The European Commission wants to know more about the alleged CIA “black sites” in Eastern Europe.